Kubota Engine Error Codes (Fault Errors / DTC List)

Kubota engines, known for their reliability and efficiency, utilize error codes to help diagnose and troubleshoot issues effectively. Whether you’re a seasoned mechanic or a Kubota engine owner looking to understand error codes better, this resource is designed to provide you with valuable insights. In this guide, you’ll find a curated list of Kubota engine error codes, along with their descriptions and potential causes. Understanding these error codes can empower you to identify problems promptly, leading to quicker resolutions and minimal downtime.

Kubota Engine Error P-0563 on Display

Explore our list of Kubota engine error codes to gain valuable knowledge and enhance your troubleshooting capabilities. Whether you’re maintaining agricultural equipment, construction machinery, or utility vehicles, having a grasp of these error codes can be invaluable in keeping your Kubota engine running smoothly. Please note that this list is for informational purposes only. For accurate diagnosis and repair of Kubota engine issues, always consult the manufacturer’s documentation or seek assistance from authorized Kubota service professionals.

Kubota Engine Error Codes (P 0016 – P 2310)

So, let’s embark on a journey through the world of Kubota Engine Error Codes, demystifying the language of your engine’s diagnostics and empowering you to keep your equipment in prime working condition.

Kubota DTC Fault Code P 0016 P 0087 P 0088
Name Cam/Crank Sensors FP FP
DTC Name Crank and/or Cam Could Not Synchronize During Start Fuel pressure low Fuel pressure high
J1939 SPN 636 94 94
FMI 8 1 0
MIL ON ON ON
Detected Item • Mechanical misalignment between cam and crank • Fuel presure abnomality (Low side) • Fuel presure abnomality (High side)
DTC Set Preconditions • Engine Cranking or Running • Engine Running • Engine Running
DTC Set Conditions • Cranking revs without sysnc > 4.0 revs

• and RPM > 90 min-1 (rpm)

• FP fault mode Gasoline only faults 0.0 sec

• run time wait for fuel pressure lowfaults 5.0 sec

• FP pressure < 345 kPa [abs](3.52 kgf/cm2, 50.0 psia)

• FP fault mode Gasoline only

• run time wait for fuel pressure highfaults 5.0 sec

• FP pressure > 448 kPa [abs](4.57 kgf/cm2, 65.0 psia)

Period for Judgment or Number of Occurrence for Judgment • 2 sec • 2 sec • 2 sec
System Action • None • AL Disable KC

• Low Rev Limit

• AL Disable KC

• Low Rev Limit

Engine Warning Light ON ON ON
DTC Fault Code P 0089 P 0091 P 0092
Name SCV FP FP
DTC Name SCV Stuck FP Low Voltage FP High Voltage
J1939 SPN 1347 94 94
FMI 7 4 3
MIL ON ON ON
Detected Item SCV stuck at open position (Actual rail pressure continuously exceeds the command rail pressure) • Sensor/wiring harness open/short to ground

• Sensor malfunction

• Sensor/wiring harness short to power

• Sensor malfunction

DTC Set Preconditions • Supply pump is normal and pump calibration has been executed
• Engine is operating
• Injector is normal
• Battery voltage is normal
• Sensor supply voltage VCC# is normal
• Rail pressure sensor is normal
• KeyON • KeyON
DTC Set Conditions Discharge request of supply pump goes 0 mm3/stroke or less and the actual rail pressure is 10 MPa (100 kgf/cm2, 1400 psi) more than command pressure Above state continues for 26 seconds or more • FP voltage < 0.100 V • FP voltage > 4.90 V
Period for Judgment or Number of Occurrence for Judgment • One time or more • 1 sec • 5 sec
System Action • See Service Manual • AL Disable KC

• Low Rev Limit

• AL Disable KC

• Low Rev Limit

Engine Warning Light ON ON ON

Kubota Tractor Engine Error Code P-0093

DTC Fault Code P 0093 P 0107
Name Fuel leak MAP
DTC Name Fuel leak (in high pressured fuel system) MAP Low Voltage
J1939 SPN 1239 106
FMI 1 4
MIL ON ON
Detected Item • Fuel leak from high pressured fuel system (Fuel consumption is calculated from the difference of fuel pressure of before and after the injection, and the error will be detected when excess fuel consumption is found) • Sensor/wiring harness open/short to ground

• Sensor malfunction

DTC Set Preconditions • Battery voltage is normal
• Sensor supply voltage VCC# is normal
• Rail pressure sensor is normal
• Supply pump (SCV) is normal
• Injector and injector drive circuit are normal
• NE signal is active [Engine is operating (700 rpm or more)]
• No DTC of P0087, P0088, P0089
• Engine Cranking or Running
DTC Set Conditions • (a) the flow volume which is calculated from the difference of rail pressure (decrease).
• (b) total volume of injection and leakage.
• Fuel leak is judged with following conditions:
– In case, engine speed is more than 1200 rpm: when the difference of (a) and (b) is 120 mm3/stroke or more, (a) is more than (b), and fuel leak is not from opening pressure limiter.
– In case, engine speed is 1200 rpm or less: when the difference of (a) and (b) is 400 mm3/stroke or more, (a) is more than (b), and fuel leak is not from opening pressure limiter
• MAP voltage < 0.050 V

• andTPS>5.0%

• and RPM < 4000 min-1 (rpm)

Period for Judgment or Number of Occurrence for Judgment • One time or more • 1 sec
System Action • Stop ENG, See Service Manual • AL Disable KC

• Power derate 1

Engine Warning Light ON ON
DTC Fault Code P 0108 P 0111 P 0112
Name MAP IAT IAT
DTC Name MAP high pressure IAT Higher Than Expected Stage 1 IAT Low Voltage
J1939 SPN 106 105 105
FMI 16 15 4
MIL ON OFF OFF
Detected Item • Sensor/wiring harness short to power

• Sensor malfunction

• Intake air temperature abnormality

(High side stage 1)

• Sensor / wiring harness short to

ground

• Sensor malfunction

DTC Set Preconditions • Engine Cranking or Running • Engine Running • Engine Running
DTC Set Conditions • MAP pressure > 110.3 kPa [abs]

(1.125 kgf/cm2, 16.00 psia)

• and TPS < 3.0 % • and RPM > 1000 min-1 (rpm)

• rum-time wait for all IAT HiExp

faults 0.0 sec

• IAT > 71 degC (160 degF)

• and RPM > 1000 min-1 (rpm)

• IAT voltage < 0.100 V
Period for Judgment or Number of Occurrence for Judgment • 2 sec • 60 sec • 1 sec
System Action • AL Disable KC

• Power derate 1

• AL Disable

• Power derate 1

• AL Disable

• Power derate 1

Engine Warning Light ON ON ON
DTC Fault Code P 0113 P 0116 P 0117
Name IAT ECT/CHT ECT/CHT
DTC Name IAT High Voltage ECT Higher Than Expected Stage 1 ECT/CHT Low Voltage
J1939 SPN 105 110 110
FMI 3 15 4
MIL OFF OFF OFF
Detected Item • Sensor/wiring harness open/short

to power

• Sensor malfunction

• Engine coolant temperature

abnormality (High side stage 1)

• Sensor/wiring harness short to

ground

• Sensor malfunction

DTC Set Preconditions • Engine Running • Engine Running • Engine Running
DTC Set Conditions • IAT voltage > 4.90 V • run time wait for ECT HiExp faults

30.0 sec

• ECT > 110 degC (230 degF)

• and RPM > 600 min-1 (rpm)

• ECT voltage < 0.100 V
Period for Judgment or Number of Occurrence for Judgment • 1 sec • 20 sec • 1 sec
System Action • AL Disable

• Power derate 1

• AL Disable

• Power derate 1

• AL Disable

• Power derate 1

Engine Warning Light ON ON ON
DTC Fault Code P 0118 P 0121 P 0122
Name ECT/CHT TPS TPS
DTC Name ECT/CHT High Voltage TPS1 % Lower Than TPS2 % TPS1 Signal Voltage Low
J1939 SPN 110 51 51
FMI 3 1 4
MIL OFF ON ON
Detected Item • Sensor/wiring harness open/short

to power

• Sensor malfunction

• TPS malfunction • TPS circuit in the harness short to

ground

• TPS malfunction

DTC Set Preconditions • Engine Running • Key-On, Engine Cranking, or

Running

• Key-On, Engine Cranking, or

Running

DTC Set Conditions • ECT voltage > 4.90 V • (TPS1 %TPS2 %) < 20.0 % • TPS1 voltage < 0.200 V
Period for Judgment or Number of Occurrence for Judgment • 1 sec • 1 sec • 0.5 sec
System Action • AL Disable

• Power derate 1

• Shutdown • Shutdown
Engine Warning Light ON ON ON
DTC Fault Code P 0123 P 0127 P 0129
Name TPS IAT IAT
DTC Name TPS1 Signal Voltage High IAT Higher Than Expected Stage 2 BP Low Pressure
J1939 SPN 51 105 108
FMI 3 0 1
MIL ON OFF ON
Detected Item • TPS circuit in the harness short to

power

• TPS malfunction

• Intake air temperature abnormality

(High side stage 2)

• Sensor out of calibration

• Loss for 5V reference feed

• (5V_ext1) to MAP

• Signal wire open or shorted to

ground

DTC Set Preconditions • Key-On, Engine Cranking, or

Running

• Engine Running • Engine Running
DTC Set Conditions • TPS1 voltage > 4.80 V • rum-time wait for all IAT HiExp

faults 0.0 sec

• IAT > 93 degC (200 degF)

• and RPM > 1000 min-1 (rpm)

• BP < 57.2 kPa [abs]

(0.584 kgf/cm2, 8.30 psia)

Period for Judgment or Number of Occurrence for Judgment • 0.5 sec • 120 sec • 1 sec
System Action • Shutdown • AL Disable

• Force idle

• AL Disable KC
Engine Warning Light ON ON ON
DTC Fault Code P 0134 P 0154 P 0171
Name EGO Sensors EGO Sensors Adaptive Learn
DTC Name EGO1 Open/Lazy (HO2S1) EGO2 Open/Lazy (HO2S2) Adaptive Learn Bank 1 High (Gasoline)
J1939 SPN 3217 3227 4237
FMI 5 5 0
MIL ON ON ON
Detected Item • Open feed circuit to O2 heater

• Open heater ground circuit

• Open or shorted to ground O2

signal wire

• open sensor ground (5Vrtn1)

• inoperative sensor

• Open feed circuit to O2 heater

• Open heater ground circuit

• Open or shorted to ground O2

signal wire

• open sensor ground (5Vrtn1)

• inoperative sensor

• exhaust leaks upstream or near the

HEGO sensor

• reduced fuel supply pressure to the

fuel injection system

• a inoperative sensor

• an injector that is stuck closed or

dirty

• weak spark or lack of spark to a

cylinder

• a MAP sensor that indicates pressure that is lower than ture pressure

DTC Set Preconditions • Engine Running • Engine Running • Engine Running, Adaptive Mode
DTC Set Conditions • EGO cold persistently > 120.0 sec • EGO cold persistently > 120.0 sec • AL_BM > 30 %
• and RPM >= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
Period for Judgment or Number of Occurrence for Judgment • 5 sec • 5 sec • 3 updates
System Action • CL Disable

• AL Disable KC

• CL Disable

• AL Disable KC

• CL Disable

• AL Disable KC

Engine Warning Light ON ON ON
DTC Fault Code P 0172 P 0182 P 0183
Name Adaptive Learn FT FT
DTC Name Adaptive Learn Bank1 Low (Gasoline) FT gasoline low FT gasoline high
J1939 SPN 4237 174 174
FMI 1 4 3
MIL ON ON ON
Detected Item • an inoperative O2 sensor

• high fuel supply pressure or

temperature

• internal mechanical engine damage

• an injector that is stuck open or

leaking

• Operating in a frigid atmosphere

• Sensor out of calibration

• Operating in a hot environment

• Sensor out of calibration

DTC Set Preconditions • Engine Running, Adaptive Mode • Engine Running • Engine Running
DTC Set Conditions • AL_BM < 30 % • and RPM >= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
• FT fault mode Temp only

• fuel temp < 37.0 degC (35.0 degF)

• FT fault mode Temp only

• fuel temp > 60.0 degC (140.0 degF)

Period for Judgment or Number of Occurrence for Judgment • 3 updates • 1 sec • 1 sec
System Action • CL Disable

• AL Disable KC

• None • Power derate 2
Engine Warning Light ON ON ON
DTC Fault Code P 0187 P 0217 P 0219
Name FT ECT/CHT Engine Speed
DTC Name FT Gaseous Fuel Extremery Low ECT Higher Than Expected 2 RPM Higher Than Max Allowed Governed Speed
J1939 SPN 3468 110 515
FMI 1 0 15
MIL ON OFF OFF
Detected Item • Not vaporized completely • Engine coolant temperature

abnormality (High side stage 2)

• Engine over speed condition, stuck throttle, large vacuum leak into intake manifold after throttle blade
DTC Set Preconditions • Engine Running • Engine Running • Engine Running
DTC Set Conditions • Fuel temp < 40 °C (40 °F) • run time wait for ECT HiExp faults

30.0 sec

• ECT > 116 degC (240 degF)

• and RPM > 600 min-1 (rpm)

• RPM > 3800 min-1 (rpm)
Period for Judgment or Number of Occurrence for Judgment • 1 sec • 30 sec • 1 sec
System Action • None • Power derate 2 • reduce throttle to limit speed
Engine Warning Light ON ON ON
DTC Fault Code P 0221 P 0222 P 0223
Name TPS TPS TPS
DTC Name TPS1 % Higher Than TPS2 % TPS2 Signal Voltage Low TPS2 Signal Voltage High
J1939 SPN 51 3673 3673
FMI 0 4 3
MIL ON ON ON
Detected Item • TPS malfunction • TPS circuit in the harness short to

ground

• TPS malfunction

• TPS circuit in the harness short to

power

• TPS malfunction

DTC Set Preconditions • Key-On, Engine Cranking, or

Running

• Key-On, Engine Cranking, or

Running

• Key-On, Engine Cranking, or

Running

DTC Set Conditions • (TPS1 %TPS2 %) > 20.0 % • TPS2 voltage < 0.200 V • TPS2 voltage > 4.80 V
Period for Judgment or Number of Occurrence for Judgment • 1 sec • 0.5 sec • 0.5 sec
System Action • Shutdown • Shutdown • Shutdown
Engine Warning Light ON ON ON
DTC Fault Code P 0261 P 0262 P 0264
Name Injectors Injectors Injectors
DTC Name Injector Driver #1 Open / Short-To-Ground Injector Driver #1 Short-To-Power Injector Driver #2 Open / Short-To-Ground
J1939 SPN 651 651 652
FMI 5 6 5
MIL ON ON ON
Detected Item • Loss of 12.0 V feed to injector

• open injector coil

• open or shorted to ground injector

driver circuit in engine harness

• Injector coil shorted internally

• Injector driver circuit shorted to

voltage between injector and ECM

• Loss of 12.0 V feed to injector

• open injector coil

• open or shorted to ground injector

driver circuit in engine harness

DTC Set Preconditions • Key-On, Engine Running • Key-On, Engine Running • Key-On, Engine Running
DTC Set Conditions • Injector1 off-state low-side < 4.00 V • and battery voltage > 9.00 V • Injector1 on-state low-side > 4.00 V

• and battery voltage < 16.0 V

• Injector2 off-state low-side < 4.00 V • and battery voltage > 9.00 V
Period for Judgment or Number of Occurrence for Judgment • 10 samples • 10 samples • 10 samples
System Action • CL Disable

• AL Disable KC

• Low Rev Limit

• CL Disable

• AL Disable KC

• Low Rev Limit

• CL Disable

• AL Disable KC

• Low Rev Limit

Engine Warning Light ON ON ON
DTC Fault Code P 0265 P 0267 P 0268
Name Injectors Injectors Injectors
DTC Name Injector Driver #2 Short-To-Power Injector Driver #3 Open/Short-To-Ground Injector Driver #3 Short-To-Power
J1939 SPN 652 653 653
FMI 6 5 6
MIL ON ON ON
Detected Item • Injector coil shorted internally

• Injector driver circuit shorted to

voltage between injector and ECM

• Loss of 12.0 V feed to injector

• open injector coil

• open or shorted to ground injector

driver circuit in engine harness

• Injector coil shorted internally

• Injector driver circuit shorted to

voltage between injector and ECM

DTC Set Preconditions • Key-On, Engine Running • Key-On, Engine Running • Key-On, Engine Running
DTC Set Conditions • Injector2 on-state low-side > 4.00 V

• and battery voltage < 16.0 V

• Injector3 off-state low-side < 4.00 V • and battery voltage > 9.00 V • Injector3 on-state low-side > 4.00 V

• and battery voltage < 16.0 V

Period for Judgment or Number of Occurrence for Judgment • 10 samples • 10 samples • 10 samples
System Action • CL Disable

• AL Disable KC

• Low Rev Limit

• CL Disable

• AL Disable KC

• Low Rev Limit

• CL Disable

• AL Disable KC

• Low Rev Limit

Engine Warning Light ON ON ON
DTC Fault Code P 0270 P 0271 P 0326
Name Injectors Injectors Knock
DTC Name Injector Driver #4 Open/Short-To-Ground Injector Driver #4 Short-To-Power Knock 1 Excessive or Erratic Signal
J1939 SPN 654 654 731
FMI 5 6 2
MIL ON ON ON
Detected Item • Loss of 12.0 V feed to injector

• open injector coil

• open or shorted to ground injector

driver circuit in engine harness

• Injector coil shorted internally

• Injector driver circuit shorted to

voltage between injector and ECM

• Knock signal abnormality

(High side)

• Sensor malfunction

DTC Set Preconditions • Key-On, Engine Running • Key-On, Engine Running • Key On, Engine On
DTC Set Conditions • Injector4 off-state low-side < 4.00 V • and battery voltage > 9.00 V • Injector4 on-state low-side > 4.00 V

• and battery voltage < 16.0 V

• KNK1 sensor input > 0.500 V

• MAP < 55.2 kPa [abs]

(0.562 kgf/cm2, 8.00 psia)

Period for Judgment or Number of Occurrence for Judgment • 10 samples • 10 samples • 3 sec
System Action • CL Disable

• AL Disable KC

• Low Rev Limit

• CL Disable

• AL Disable KC

• Low Rev Limit

• Power derate 1

• Retard Fault KNK

Engine Warning Light ON ON ON
DTC Fault Code P 0327 P 0336 P 0337
Name Knock Cam/Crank Sensors Cam/Crank Sensors
DTC Name Knock 1 Sensor Open or Not Present Crank Input Signal Noise Loss of Crankshaft Input Signal
J1939 SPN 731 636 636
FMI 4 2 4
MIL ON ON ON
Detected Item • Sensor/wiring harness open/short

to power

• Sensor malfunction

• Crank+ or Crank circuits in wrong connector terminal slot • Loss of sensor feed

• open sensor ground

• open or shorted to ground signal

wire

DTC Set Preconditions • Key On, Engine On • Key On, Engine On • Key On, Engine On
DTC Set Conditions • KNK1 sensor input < 0.005 V • and RPM > 2000 min-1 (rpm)

• and MAP > 82.7 kPa [abs]

(0.844 kgf/cm2, 12.00 psia)

• Number of invalid cam re-syncs 3

re-syncs

• within a time window of <= 800 ms

• Cam pulsed without crank activity >

3 cam pulses

Period for Judgment or Number of Occurrence for Judgment • 10 sec • 1 sec • 1 sec
System Action • Power derate 1

• Retard Fault KNK

• AL Disable KC • None
Engine Warning Light ON ON ON
DTC Fault Code P 0341 P 0342 P 0359
Name Cam/Crank Sensors Cam/Crank Sensors Lockoff/Fuel Diagnostics
DTC Name Camshaft Input Signal Noise Loss of Camshaft Input Signal Fuel run-out longer than expected
J1939 SPN 723 723 632
FMI 2 4 31
MIL ON ON ON
Detected Item • Cam+ or Cam circuits in wrong connector terminal slot • Loss of feed voltage to Cam sensor

• loss of signal or ground circuits

• faulty sensor

DTC Set Preconditions • Key On, Engine On • Key On, Engine On • Key Off, Engine On
DTC Set Conditions • Number of invalid cam re-syncs 3

re-syncs

• within a time window of <= 700 ms

• No cam pulse in 2.0 cycles

• and RPM > 150 min-1 (rpm)

• Fuel run-out engine run time >

20000 ms

Period for Judgment or Number of Occurrence for Judgment • 1 sec • 1 sec • N/A
System Action • AL Disable KC • AL Disable KC • Shutdown
Engine Warning Light ON ON OFF
DTC Fault Code P 0420 P 0524 P 0562
Name Catalyst Oil Pressure Battery Voltage
DTC Name Catalyst Monitor Oil Pressure Low Battery Voltage (VBAT) Low
J1939 SPN 3050 100 168
FMI 11 1 17
MIL OFF ON ON
Detected Item • Low Oil Pressure • Wiring harness open / short / damage

• Battery abnormality

DTC Set Preconditions • Engine Running • Key On, Engine On • Key On, Engine On
DTC Set Conditions • EGO3/4 RMS > 0.008 phi

• and EGO3/4 RMS > EGO1/2 RMS

50 %

• and EGO3/4 RMS > CL waveform

RMS 50 %

• and mass flow at ports >=

10.0 g/sec and <= CBT CBT_ss

+/50.0 degF

• run time wait for oil pressure low

faults 4.0 sec

• RPM lower limit for oil pressure low

faults 300 min-1 (rpm)

• Oil pressure pulled-up input less

than a threshold voltage of 2.50 V

• Voltage < 9.00 V • and RPM > 1000 min-1 (rpm)
Period for Judgment or Number of Occurrence for Judgment • 100 updates • 1 sec • 5 sec
System Action • Shutdown

• CL Disable

• AL Disable

• Hard Warning

• Shutdown • AL Disable KC

• Power derate 2

Engine Warning Light ON ON ON

Kubota Engine Fault Codes

DTC Fault Code P 0563 P 0601 P 0604
Name Battery Voltage Internal Processor Diagnostics Internal Processor Diagnostics
DTC Name Battery Voltage (VBAT) High Microprocessor Failure-FLASH Microprocessor Failure-RAM
J1939 SPN 168 628 630
FMI 15 13 12
MIL ON ON ON
Detected Item • System voltage abnormality

(High side)

• Faulty ECU • Faulty ECU
DTC Set Preconditions • Key-On, Engine Cranking, or

Running

• Key on • Key on
DTC Set Conditions • Voltage > 16.00 V • Internal microprocessor error • Internal ECM microprocessor

memory access failure

Period for Judgment or Number of Occurrence for Judgment • 3 sec • N/A • N/A
System Action • AL Disable KC

• Low Rev Limit

• Never Forget

• AL Disable KC

• Power derate 2

• Never Forget

• AL Disable KC

• Power derate 2

Engine Warning Light ON OFF OFF
DTC Fault Code P 0606 P 0627 P 0628
Name Internal Processor Diagnostics Fuel Pump Relay Control/Coil Fuel Pump Relay Control/Coil Fuel Pump Motor Feedback
DTC Name Microprocessor Failure-COP Fuel Pump Relay Coil Open Fuel Pump Relay Ground Short
J1939 SPN 629 1348 1348 1347
FMI 31 5 4 5
MIL ON ON ON ON
Detected Item • Faulty ECU • Open coil in relay

• Open in relay driver circuit in engine

harness

• Relay pull in coil shorted internally

• relay driver circuit shorted to ground in wire harness

DTC Set Preconditions • Key on • Key On, Engine Off • Engine Running
DTC Set Conditions • Internal microprocessor error • Fuel Pump relay coil output open

circuit

• Fuel Pump relay coil output shorted to ground • Fuel pump

motor high-side

on-state < 4.0 volts • battery voltage > 8.0 volts

Period for Judgment or Number of Occurrence for Judgment • N/A • 10 samples • 10 samples • 2 sec
System Action • Never Forget

• AL Disable KC

• Power derate 2

• None • None • None
Engine Warning Light OFF ON ON ON
DTC Fault Code P 0629 P 0642 P 0643
Name Fuel Pump Relay Control/Coil Fuel Pump Motor Feedback 5 V External 5 V External
DTC Name Fuel Pump Relay Coil Short-To-Power Sensor Supply Voltage 1 Low (5Vext1) Sensor Supply Voltage 1 High (5Vext1)
J1939 SPN 1348 1347 1079 1079
FMI 3 6 4 3
MIL ON ON ON ON
Detected Item • Shorted relay

pull in coil

• relay driver circuit shorted to voltage in wire harness

• Wiring harness short to ground

• ECM malfunction

• Wiring harness short to 12.0 V

power

• ECM malfunction

DTC Set Preconditions • Engine Running • Key-On, Engine OFF, or Running • Key-On, Engine OFF, or Running
DTC Set Conditions • Fuel Pump relay coil output short to power/ voltage • Fuel pump

motor high-side

off-state < 4.0 volts

• battery voltage < 16.0 volts

• 5VE1 < 4.60 V • 5VE1 > 5.40 V
Period for Judgment or Number of Occurrence for Judgment • 10 samples • 2 sec • 1 sec • 1 sec
System Action • None • None • AL Disable

• Power derate 1

• AL Disable

• Power derate 1

Engine Warning Light ON ON ON ON
DTC Fault Code P 0652 P 0653 P 0686
Name 5 V External 5 V External Power Relay Control/Coil
DTC Name Sensor Supply Voltage 2 Low (5Vext2) Sensor Supply Voltage 2 High (5Vext2) Power Relay Ground Short
J1939 SPN 1080 1080 1485
FMI 4 3 4
MIL ON ON ON
Detected Item • Wiring harness short to ground

• ECM malfunction

• Wiring harness short to 12.0 V

power

• ECM malfunction

• Short to ground in relay pull in coil

• short to ground in relay driver circuit

in wire harness

DTC Set Preconditions • Key-On, Engine OFF, or Running • Key-On, Engine OFF, or Running • Key On, Engine Off
DTC Set Conditions • 5VE2 < 4.60 V • 5VE2 > 5.40 V • Power relay coil output shorted to

ground

Period for Judgment or Number of Occurrence for Judgment • 1 sec • 1 sec • 10 samples
System Action • AL Disable

• Power derate 1

• AL Disable

• Power derate 1

• None
Engine Warning Light ON ON OFF
DTC Fault Code P 0687 P 1111 P 1112
Name Power Relay Control/Coil Engine Speed Engine Speed
DTC Name Power Relay Coil Short-To-Power RPM Above Fuel Rev Limit Level RPM Above Spark Rev Limit Level
J1939 SPN 1485 515 515
FMI 3 16 0
MIL ON ON ON
Detected Item • Shorted relay pull in coil

• relay driver circuit shorted to

voltage in wire harness

• Engine overspeed condition, faulty

Crank sensor or input

• Engine overspeed condition, faulty

Crank sensor or input

DTC Set Preconditions • Key On, Engine Off • Engine Running • Engine Running
DTC Set Conditions • Power relay coil output short to

power/voltage

• RPM > 4200 min-1 (rpm) • RPM > 4300 min-1 (rpm)
Period for Judgment or Number of Occurrence for Judgment • 10 samples • 1 sec • 1 sec
System Action • None • disable fuel injectors or gaseous

fuel control actuator

• disable ignition coils
Engine Warning Light OFF ON ON
DTC Fault Code P 1121 P 1151 P 1152
Name FPP Closed Loop Closed Loop
DTC Name FPP1/2 Simultaneous Voltages Out-of-Range Closed Loop High (LPG) Closed Loop Low (LPG)
J1939 SPN 91 4236 4236
FMI 31 0 1
MIL ON ON ON
Detected Item • Wiring harness open / short / damage

• FPP malfunction

• exhaust leaks upstream or near the

HEGO sensor

• reduced fuel supply pressure to the

gaseous fuel control system

• a fuel supply or manifold leak

• a non-responsive HEGO sensor

• high fuel supply pressure to the gaseous fuel control or faulty pressure regulator

• a non-responsive HEGO sensor

DTC Set Preconditions • Key on, Engine Off • Engine Running, Closed Loop

Mode

• Engine Running, Closed Loop

Mode

DTC Set Conditions • User same parameter as individual FPP 1/2 voltage fault detection above • CL_BM > 35 %
• and RPM >= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
• CL_BM < 35 % • and RPM >= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
Period for Judgment or Number of Occurrence for Judgment • 0.5 sec • Power Derate2

• 5 updates

• 5 updates
System Action • Power Derate 2

• Low Rev Limit

• Force Idle

• CL Disable

• AL Disable KC

• CL Disable

• AL Disable KC

Engine Warning Light OFF ON ON
DTC Fault Code P 1153 P 1154 P 1155
Name Closed Loop Closed Loop Closed Loop
DTC Name Closed Loop High (NG) Closed Loop Low (NG) Closed Loop Bank 1 High (Gasoline)
J1939 SPN 4236 4236 4236
FMI 0 1 0
MIL ON ON ON
Detected Item • exhaust leaks upstream or near the

HEGO sensor

• reduced fuel supply pressure to the

gaseous fuel control system

• a fuel supply or manifold leak

• a non-responsive HEGO sensor

• high fuel supply pressure to the gaseous fuel control or faulty pressure regulator

• a non-responsive HEGO sensor

• exhaust leaks upstream or near the

HEGO sensor

• reduced fuel supply pressure

• an injector that is stuck closed

DTC Set Preconditions • Engine Running, Closed Loop

Mode

• Engine Running, Closed Loop

Mode

• Engine Running, Closed Loop

Mode

DTC Set Conditions • CL_BM > 35 %
• and RPM <= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
• CL_BM < 35 % • and RPM >= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
• CL_BM > 35 %
• and RPM >= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
Period for Judgment or Number of Occurrence for Judgment • 5 updates • 5 updates • 5 updates
System Action • CL Disable

• AL Disable KC

• CL Disable

• AL Disable KC

• CL Disable

• AL Disable KC

Engine Warning Light ON ON ON
DTC Fault Code P 1156 P 1161 P 1162
Name Closed Loop Adaptive Learn Adaptive Learn
DTC Name Closed Loop Bank 1 Low (Gasoline) Adaptive Learn High (LPG) Adaptive Learn Low (LPG)
J1939 SPN 4236 4237 4237
FMI 1 0 1
MIL ON ON ON
Detected Item • high fuel supply pressure to the fuel

injection system

• a non-responsive HEGO sensor

• an injector that is stuck open

• exhaust leaks upstream or near the

HEGO sensor

• reduced fuel supply pressure to the

gaseous fuel control system

• a fuel supply or manifold leak

• a non-responsive HEGO sensor

• high fuel supply pressure to the gaseous fuel control or faulty pressure regulator

• a non-responsive HEGO sensor

DTC Set Preconditions • Engine Running, Closed Loop

Mode

• Engine Running, Adaptive Mode • Engine Running, Adaptive Mode
DTC Set Conditions • CL_BM < 35 % • and RPM >= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
• AL_BM > 30 %
• and RPM >= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
• AL_BM < 30 % • and RPM >= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
Period for Judgment or Number of Occurrence for Judgment • 5 updates • 3 updates • 3 updates
System Action • CL Disable

• AL Disable KC

• CL Disable

• AL Disable KC

• CL Disable

• AL Disable KC

Engine Warning Light ON ON ON
DTC Fault Code P 1163 P 1164 P 1165
Name Adaptive Learn Adaptive Learn Catalyst
DTC Name Adaptive Learn High (NG) Adaptive Learn Low (NG) Catalyst inactive on LPG
J1939 SPN 4237 4237 3050
FMI 0 1 11
MIL ON ON OFF
Detected Item • exhaust leaks upstream or near the

HEGO sensor

• reduced fuel supply pressure to the

gaseous fuel control system

• a fuel supply or manifold leak

• a non-responsive HEGO sensor

• high fuel supply pressure to the gaseous fuel control or faulty pressure regulator

• a non-responsive HEGO sensor

DTC Set Preconditions • Engine Running, Adaptive Mode • Engine Running, Adaptive Mode • Engine Running
DTC Set Conditions • AL_BM > 30 %
• and RPM >= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
• AL_BM < 30 % • and RPM >= 0 min-1 (rpm)
• and RPM <= 9999 min-1 (rpm)
• and MAP >= 0.0 kPa [abs]
(0.0 kgf/cm2, 0.0 psia)
• and MAP <= 682 kPa [abs]
(6.96 kgf/cm2, 99.0 psia)
• EGO3/4 RMS > 0.008 phi

• and EGO3/4 RMS > EGO1/2 RMS

50 %

• and EGO3/4 RMS > CL waveform

RMS 50 %

• and mass flow at ports >=

10.0 g/sec and <= CBT CBT_ss

+/50.0 degF

Period for Judgment or Number of Occurrence for Judgment • 3 updates • 3 updates • 100 updates
System Action • CL Disable

• AL Disable KC

• CL Disable

• AL Disable KC

• Shutdown

• CL Disable

• AL Disable

• Hard Warning

Engine Warning Light ON ON ON
DTC Fault Code P 1166 P 1171 P 1172
Name Catalyst EPR Diagnostics EPR Diagnostics
DTC Name Catalyst inactive on NG EPR/CFV Regulation Pressure Higher than Expected EPR/CFV Regulation Pressure Lower than Expected
J1939 SPN 3050 520260 520260
FMI 11 0 1
MIL OFF ON ON
Detected Item • Inlet pressure to DEPR is too high. • Inlet pressure to DEPR is too low.

• Malfunctioning lock off valve, plugged fuel filter, closed manual valve or fuel tank out of fuel

DTC Set Preconditions • Engine Running • Engine Running • Engine Running
DTC Set Conditions • EGO3/4 RMS > 0.008 phi

• and EGO3/4 RMS > EGO1/2 RMS

50 %

• and EGO3/4 RMS > CL waveform

RMS 50 %

• and mass flow at ports >=

10.0 g/sec and <= CBTCBT_ss

+/50.0 degF

• EPR actual-commanded pressure

> 2.50 in H2O

• EPR actual-commanded pressure

< -2.50 in H2O

Period for Judgment or Number of Occurrence for Judgment • 100 updates • 5 sec • 5 sec
System Action • CL Disable

• AL Disable KC

• AL Disable • AL Disable
Engine Warning Light ON ON ON
DTC Fault Code P 1173 P 1174 P 1175
Name EPR Diagnostics EPR Diagnostics EPR Diagnostics
DTC Name EPR/CFV comm lost EPR/CFV Voltage Supply High EPR/CFV Voltage Supply Low
J1939 SPN 520620 520260 520260
FMI 31 3 4
MIL OFF ON ON
Detected Item • Faulty CAN cinnection

• CAN terminal incorrect

• Supply voltage to the EPR/CFV is

too high

• Supply voltage to the EPR/CFV is

too low

DTC Set Preconditions • Engine Running • Engine Running • Engine Running
DTC Set Conditions • No EPR packets recieved within

500 ms

• Voltage supply to EPR/CFV is >

33.0 VDC

• Voltage supply to EPR/CFV is <

18.0 VDC

Period for Judgment or Number of Occurrence for Judgment • 0.5 sec • 5 sec • 5 sec
System Action • CL Disable

• AL Disable KC

• AL Disable

• AL Disable KC

• Power Derate 2

• Low Rev Limit

• AL Disable

• AL Disable KC

• Power Derate 2

• Low Rev Limit

Engine Warning Light ON ON ON
DTC Fault Code P 1176 P 1177 P 1611
Name EPR Diagnostics EPR Diagnostics 5V External
DTC Name EPR/CFV Internal Actuator Fault Detection EPR/CFV Internal Circuitry Fault Detection Sensor Supply Voltage (5Vext 1/2) Simultaneous Out-of-Range
J1939 SPN 520260 520260 1079
FMI 12 12 31
MIL ON ON ON
Detected Item • Short or open circuit in actuator coil

• Associated wiring

• Overheating of actuator drive

electronics

• DEPR internal microprocessor or memory failure, fuel temperature sensor failure. • Wiring harness short to 12V power

or ground

• ECM malfunction

DTC Set Preconditions • Engine Running • Engine Running • Engine On
DTC Set Conditions • the DEPR electronics detect a fault condition associated with its internal actuator. • the DEPR electronics detect a fault condition associated with its internal circuitry. • 5Vext1> 5.40 V or 5Vext1< 4.60 V, and 5Vext2 > 5.40 V or 5Vext2 <

4.60 V

Period for Judgment or Number of Occurrence for Judgment • 0.25 sec • 0.25 sec • 1 sec
System Action • AL Disable • AL Disable • Power Derate 2

• Low Rev Limit

• Force Idle

Engine Warning Light ON ON ON
DTC Fault Code P 1612 P 1613 P 1614
Name Internal Processor Diagnostics Internal Processor Diagnostics Internal Processor Diagnostics
DTC Name Microprocessor Failure-RTI 1 Microprocessor Failure-RTI 2 Microprocessor Failure-RTI 3
J1939 SPN 629 629 629
FMI 31 31 31
MIL ON ON ON
Detected Item • Faulty ECU • Faulty ECU • Faulty ECU
DTC Set Preconditions • Key on • Key on • Key on
DTC Set Conditions • Internal microprocessor error • Internal microprocessor error • Internal microprocessor error
Period for Judgment or Number of Occurrence for Judgment • N/A • N/A • N/A
System Action • Shutdown

• CL Disable

• AL Disable

• Hard Warning

• Never Forget

• AL Disable KC

• Power derate 2

• Never Forget

• AL Disable KC

• Power derate 2

Engine Warning Light ON OFF OFF
DTC Fault Code P 1615 P 1616 P 1673
Name Internal Processor Diagnostics Internal Processor Diagnostics General System Diagnostics
DTC Name Microprocessor Failure-A/D Microprocessor Failure-Interrupt Calibration Configuration Error
J1939 SPN 629 629 1634
FMI 31 31 13
MIL ON ON ON
Detected Item • Faulty ECU • Faulty ECU • ECM malfunction
DTC Set Preconditions • Key on • Key on • Key ON
DTC Set Conditions • Internal microprocessor error • Internal microprocessor error • Specific calibration variable checks

do not return expected results

Period for Judgment or Number of Occurrence for Judgment • N/A • N/A • N/A
System Action • Never Forget

• AL Disable KC

• Power derate 2

• Never Forget

• AL Disable KC

• Power derate 2

• Never Forget

• AL Disable KC

• Power derate 2

Engine Warning Light OFF OFF OFF
DTC Fault Code P 2111 P 2112 P 2121
Name TPS TPS FPP
DTC Name Unable to Reach Lower TPS Unable to Reach Higher TPS FPP1 Lower Than FPP2
J1939 SPN 51 51 91
FMI 7 7 18
MIL ON ON ON
Detected Item • TPS malfunction • TPS malfunction • Wiring harness open / short / damage

• FPP malfunction

DTC Set Preconditions • Cranking or Running • Cranking or Running • Key On, Engine Off
DTC Set Conditions • target TPS-actual TPS < 20.0 % • persistently longer than 200 ms while battery voltage > 9.00 V and battery voltage < 16.0 V • target TPS-actual TPS > 20.0 %

• persistently longer than 200 ms while battery voltage > 9.00 V and battery voltage < 16.0 V

• (FPP 1 % – FPP 2 %) < 20.0 %
Period for Judgment or Number of Occurrence for Judgment • 1 sec • 1 sec • 1.5 sec
System Action • Shutdown • Shutdown • Power derate 2

• Low Rev Limit

Engine Warning Light ON ON ON

Kubota Engine Diagnostics

DTC Fault Code P 2122 P 2123 P 2126
Name FPP FPP FPP
DTC Name FPP1 Voltage High FPP1 Voltage Low FPP1 Higher Than FPP2
J1939 SPN 91 91 91
FMI 3 4 16
MIL ON 2Hz ON 2Hz ON
Detected Item • Wiring harness open / short / damage

• FPP malfunction

• Wiring harness open / short / damage

• FPP malfunction

• Wiring harness open / short / damage

• FPP malfunction

DTC Set Preconditions • Key On • Key On, Engine Off • Key On, Engine Off
DTC Set Conditions • FPP1 voltage > 4.80 V • FPP1 voltage < 0.200 V • (FPP 1 % – FPP 2 %) > 20.0 %
Period for Judgment or Number of Occurrence for Judgment • 0.5 sec • 0.5 sec • 1.5 sec
System Action • Power derate 1

• Low Rev Limit

• Power derate 1

• Low Rev Limit

• Power derate 2

• Low Rev Limit

Engine Warning Light ON ON ON
DTC Fault Code P 2127 P 2128 P 2135
Name FPP FPP TPS
DTC Name FPP2 voltage low FPP2 voltage high TPS1/2 Simultaneous Voltages out of range
J1939 SPN 29 29 51
FMI 4 3 31
MIL ON 2Hz ON 2Hz ON
Detected Item • Wiring harness open / short / damage

• FPP malfunction

• Wiring harness open / short / damage

• FPP malfunction

• TPS malfunction
DTC Set Preconditions • Key On • Key On • Key On, Engine On
DTC Set Conditions • FPP1 voltage < 0.200 V • FPP1 voltage > 4.80 V • User same parameter as individual TPS1/2 voltage fault detection above
Period for Judgment or Number of Occurrence for Judgment • 0.5 sec • 0.5 sec • 0.5 sec
System Action • Power derate 1

• Low Rev Limit

• Power derate 1

• Low Rev Limit

• Shutdown
Engine Warning Light ON ON ON
DTC Fault Code P 2300 P 2301 P 2303
Name Spark Coil Primary Spark Coil Primary Spark Coil Primary
DTC Name Spark Coil #1 Primary Open/Short-to-Ground Spark Coil #1 Primary Short-to-Power Spark Coil #2 Primary Open/Short-to-Ground
J1939 SPN 1268 1268 1269
FMI 5 6 5
MIL ON ON ON
Detected Item • a short to ground or open circuit in

the harness

• an open internal to the primary coil

• a short to power in the harness

• a short internal to the primary coil

• a short to ground or open circuit in

the harness

• an open internal to the primary coil

DTC Set Preconditions • Key On, Engine On • Key On, Engine On • Key On, Engine On
DTC Set Conditions • Adaptive dwell adjustment >=

2.0 ms

• or total dwell >= 14.0 ms

• and battery voltage > 11.0 V

• Adaptive dwell adjustment <=

2.0 ms

• or total dwell <= 4.0 ms

• and battery voltage < 16.0 V

• Adaptive dwell adjustment >=

2.0 ms

• or total dwell >= 14.0 ms

• and battery voltage > 11.0 V

Period for Judgment or Number of Occurrence for Judgment • 10 sparks • 10 sparks • 10 sparks
System Action • CL Disable

• AL Disable

• Low Rev Limit

• CL Disable

• AL Disable

• Low Rev Limit

• CL Disable

• AL Disable

• Low Rev Limit

Engine Warning Light ON ON ON
DTC Fault Code P 2304 P 2306 P 2307
Name Spark Coil Primary Spark Coil Primary Spark Coil Primary
DTC Name Spark Coil #2Primary Short-to-Power Spark Coil #3 Primary Open/Short-to-Ground Spark Coil #3 Primary Short-to-Power
J1939 SPN 1269 1270 1270
FMI 6 5 6
MIL ON ON ON
Detected Item • a short to power in the harness

• a short internal to the primary coil

• a short to ground or open circuit in

the harness

• an open internal to the primary coil

• a short to power in the harness

• a short internal to the primary coil

DTC Set Preconditions • Key On, Engine On • Key On, Engine On • Key On, Engine On
DTC Set Conditions • Adaptive dwell adjustment <=

2.0 ms

• or total dwell <= 4.0 ms

• and battery voltage < 16.0 V

• Adaptive dwell adjustment >=

2.0 ms

• or total dwell >= 14.0 ms

• and battery voltage > 11.0 V

• Adaptive dwell adjustment <=

2.0 ms

• or total dwell <= 4.0 ms

• and battery voltage < 16.0 V

Period for Judgment or Number of Occurrence for Judgment • 10 sparks • 10 sparks • 10 sparks
System Action • CL Disable

• AL Disable

• Low Rev Limit

• CL Disable

• AL Disable

• Low Rev Limit

• CL Disable

• AL Disable

• Low Rev Limit

Engine Warning Light ON ON ON
DTC Fault Code P 2309 P 2310
Name Spark Coil Primary Spark Coil Primary
DTC Name Spark Coil #4 Primary Open/Short-to-Ground Spark Coil #4 Primary Short-to-Power
J1939 SPN 1271 1271
FMI 5 6
MIL ON ON
Detected Item • a short to ground or open circuit in

the harness

• an open internal to the primary coil

• a short to power in the harness

• a short internal to the primary coil

DTC Set Preconditions • Key On, Engine On • Key On, Engine On
DTC Set Conditions • Adaptive dwell adjustment >=

2.0 ms

• or total dwell >= 14.0 ms

• and battery voltage > 11.0 V

• Adaptive dwell adjustment <=

2.0 ms

• or total dwell <= 4.0 ms

• and battery voltage < 16.0 V

Period for Judgment or Number of Occurrence for Judgment • 10 sparks • 10 sparks
System Action • CL Disable

• AL Disable

• Low Rev Limit

• CL Disable

• AL Disable

• Low Rev Limit

Engine Warning Light ON ON

How To Reset Kubota Engine Error Codes?

You can often reset Kubota Engine Error Codes, but it’s essential to understand when and how to do it properly. Resetting error codes should only be done after you have identified and resolved the underlying issue that triggered the code. Here are the general steps to reset Kubota Engine Error Codes:

  1. Identify and Resolve the Issue: Use your engine’s user manual or diagnostic tool to determine the cause of the error code. Address the problem by fixing the issue, whether it’s related to fuel, air, electrical systems, or other components.
  2. Access the Diagnostic System: Depending on your Kubota engine model, you may need to use a diagnostic tool or display module to access the error code and reset it. Refer to your engine’s user manual for specific instructions on how to access the diagnostic system.
  3. Clear the Error Code: Once you’ve accessed the diagnostic system, locate the option to clear or reset error codes. Follow the on-screen or manual instructions to clear the code. This typically involves confirming that the issue has been resolved.
  4. Test the Engine: Before resuming regular operation, start the engine and run some tests to verify that the issue is indeed resolved and that the error code does not reappear.
  5. Monitor for Recurrence: Continue to monitor the engine for any recurrence of the error code. If the code reappears, it may indicate an ongoing or unresolved issue that requires further investigation and repair.

Remember that resetting error codes without addressing the root cause can lead to more significant problems. It’s essential to ensure that the issue has been properly fixed before clearing the code. If you’re unsure about the troubleshooting and reset process, or if the issue persists, it’s advisable to contact a Kubota-authorized service technician for assistance.

Kubota Engine Error Codes FAQ

Error codes serve as a diagnostic tool to help engine owners and technicians identify and address issues efficiently.

Kubota Engine DTC Codes

They are designed to streamline the troubleshooting process and pinpoint the root cause of a problem, saving time and reducing repair costs.

  • Why are Kubota engine error codes important? Kubota engine error codes are essential for diagnosing engine problems quickly and accurately. They provide valuable information about the nature and location of faults, enabling technicians to troubleshoot efficiently.
  • How do I interpret Kubota engine error codes? Each Kubota engine error code consists of a letter and a series of numbers. The letter indicates the system or component affected, while the numbers provide additional details about the specific fault or condition.
  • What should I do if I encounter a Kubota engine error code? When a Kubota engine error code appears, it’s essential to refer to the manufacturer’s documentation or service manual to identify the code’s meaning and possible causes. Depending on the severity of the issue, you may need to address it immediately or schedule maintenance with a qualified technician.
  • Can I reset Kubota engine error codes? In some cases, Kubota engine error codes can be cleared or reset by disconnecting the battery or using diagnostic tools compatible with Kubota engines. However, it’s crucial to diagnose and address the underlying issue before resetting error codes to prevent recurring problems.
  • Are Kubota engine error codes universal across all models? While many Kubota engine error codes are standardized across various models, some codes may be specific to particular engine configurations or applications. Always consult the appropriate documentation for your specific Kubota engine model.
  • How can I prevent Kubota engine error codes? Regular maintenance, including scheduled inspections, fluid checks, and component replacements, can help prevent many issues that trigger Kubota engine error codes. Following Kubota’s recommended maintenance schedule and operating guidelines is key to ensuring optimal engine performance and reliability.
  • Are Kubota engine error codes covered under warranty? Warranty coverage for Kubota engine error codes depends on the terms and conditions of the warranty agreement. Typically, manufacturer warranties may cover certain repairs related to engine malfunctions indicated by error codes, but it’s essential to review the warranty documentation for specific coverage details.
  • Can I diagnose Kubota engine error codes myself? While some Kubota engine error codes may be straightforward to diagnose, others may require specialized diagnostic tools and technical knowledge. If you’re experienced with engine troubleshooting and have access to the necessary tools and resources, you may be able to diagnose and address certain issues yourself. However, for complex or severe problems, it’s best to seek assistance from a qualified technician.

Kubota Engine Error Codes (Fault Errors / DTC List)

  • What are some common causes of Kubota engine error codes? Common causes of Kubota engine error codes include fuel system issues, electrical problems, sensor malfunctions, cooling system faults, and mechanical failures. Environmental factors, improper maintenance, and operational errors can also contribute to error code generation.
  • How can I find the meaning of a specific Kubota engine error code? To find the meaning of a specific Kubota engine error code, refer to the manufacturer’s documentation, service manuals, or online resources provided by Kubota dealerships or authorized service centers. These resources typically include comprehensive lists of error codes along with their descriptions and troubleshooting procedures.
  • Can Kubota engine error codes be indicative of serious problems? While some Kubota engine error codes may indicate minor issues or temporary malfunctions, others may signal more serious problems that require immediate attention. Ignoring certain error codes or neglecting necessary repairs could lead to significant engine damage or performance degradation over time.
  • Are there diagnostic tools available for troubleshooting Kubota engine error codes? Yes, Kubota dealerships and authorized service centers typically use diagnostic tools and equipment designed specifically for diagnosing engine faults and reading error codes. These tools allow technicians to perform comprehensive diagnostics and identify the root causes of engine problems quickly and accurately.
  • Can Kubota engine error codes affect engine performance or fuel efficiency? Yes, unresolved Kubota engine error codes can negatively impact engine performance, fuel efficiency, and overall reliability. Ignition timing, fuel delivery, emissions control, and other critical engine functions may be affected by underlying issues indicated by error codes.
  • Is it safe to continue operating the engine if an error code is present? It’s generally not advisable to continue operating the engine if an error code is present, especially if the code indicates a serious issue or potential safety hazard. Continuing to run the engine under such conditions could exacerbate the problem and lead to costly repairs or engine failure.
  • How often should I check for Kubota engine error codes? Regularly monitoring for Kubota engine error codes as part of routine maintenance and inspection procedures can help detect and address issues early, minimizing the risk of more severe problems down the line. Depending on your operating conditions and usage, checking for error codes during scheduled service intervals or whenever unusual symptoms arise is recommended.
Comments: 2
  1. Andrew Harbert

    Hello, my Kubota L4060 compact tractor keeps displaying a P2414 code, what does that mean? Is this an Kubota engine problem?

    1. David R. Ledford (author)

      OBD-II fault code P2414 mean = O2 Sensor Exhaust Sample Error (Oxygen sensor failure). If the Oxygen Sensor reads too much O2 at part or full throttle, the Kubota engine computer assumes that the O2 sensor is installed incorrectly or there is an exhaust leak – error code P2414 will be set. Sometimes this sensor can give an error due to overheating of the EGR valve.

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