In the world of agriculture, where fields are vast and the power of tractors is indispensable, the role of a tractor mechanic is paramount. Farmers depend on their tractors day in and day out, and when something goes amiss in the transmission, it’s the mechanic who comes to the rescue. Understanding Transmission Diagnostic Trouble Codes (DTCs) is an essential facet of this role. New Holland and Case IH are titans in the agricultural machinery realm. Their tractors are the backbone of farming operations across the globe. These machines are robust and dependable, yet, like any mechanical system, they can encounter transmission-related challenges. This is where DTCs become invaluable.
What are Transmission DTC Codes?
DTCs are the tractor’s way of speaking to us, a coded language that conveys its well-being and any issues it might be experiencing. Comprising letters and numbers, these codes provide vital information for a skilled tractor mechanic, serving as the key to efficient diagnosis and repair.
Our extensive list of New Holland and Case IH Tractor Transmission Error Codes (DTCs) is an invaluable resource for every tractor mechanic. Think of it as your decoder ring, a tool that unveils the messages these tractors are transmitting about their transmission health and performance.
New Holland & Case IH Transmission Error Codes
Type / Error Code Number / Error description
- TRANS 11 Main clutch potentiometer open or short to ground
- TRANS 12 Main clutch potentiometer Short circuit to +12 V or 5 Vref
- TRANS 24 No transmission clutch calibrated
- TRANS 37 BOC switch open circuit or neutral relay stuck open
- TRANS 38 Switching to reverse when there is no wheel speed signal
- TRANS 47 The lower part of the clutch pedal of the clutch switch is incorrectly adjusted.
- TRANS 48 BOC switch or neutral relay short circuit
- TRANS 49 Auto Guidance Shut-off valve drive failure
- TRANS 50 parking brake is released when parking.
- TRANS 51 FNRP block indicates that forward or reverse is engaged when park mode is enabled.
- TRANS 52 Parking brake stuck on when commanded off
- TRANS 53 5 V reference voltage too high
- TRANS 54 5 V reference voltage too low
- TRANS 59 FNRP block in non-logical state (two positions at the same time)
- TRANS 60 FNRP block in an illogical state (out of position)
- TRANS 61 System pressure solenoid valve circuit open or shorted to ground
- TRANS 62 System pressure solenoid valve shorted to B+
- TRANS 64 Gearbox output speed too high (above 8200 rpm)
- TRANS 65 operator attempted to perform a shuttle while out of the seat.
- TRANS 66 FNRP Pod Forward shorted to ground or open circuit
- TRANS 67 FNRP Pod Forward switch shorted to power
- TRANS 68 FNRP Pod Reverse Switch Shorted to Ground or Open Circuit
- TRANS 69 FNRP Pod Reverse Switch Shorted to Power
- TRANS 70 Battery voltage too low for clutch solenoid to operate.
- TRANS 72 Transmission oil temperature above 122 degrees. FROM
- TRANS 73 software is not in calibration mode and the parking brake request is still active.
- TRANS 74 Parking brake ON with gear engaged – no parking brake request from calibration.
- TRANS 75 Engine speed from Inst Controller does not match speed signal from generator.
- TRANS 76 The engine speed from the Eninge controller does not match the speed signal from the generator.
- TRANS 77 No signal from wheel speed sensor
- TRANS 78 Pressure accumulator with variable gearbox discharged
- TRANS 79 Engine RPM from generator is too high.
- TRANS 80 Wheel speed sensor measured too high
- TRANS 81 Gearbox clutches are slipping
- TRANS 82 Creep Clutch not calibrated
- TRANS 83 Loss of communication with the engine controller
- TRANS 103 Odd clutch solenoid or its wiring is not open or shorted to ground
- TRANS 104 Even the clutch solenoid or its wiring is not open or shorted to ground
- TRANS 105 C1-2 clutch solenoid or its wiring is not open or shorted to ground
- TRANS 106 C3-4 clutch solenoid or its wiring is not open or shorted to ground
- TRANS 107 C5-6 clutch solenoid or its wiring is not open or shorted to ground
- TRANS 108 main clutch solenoid or its wiring is not open or shorted to ground
- TRANS 109 Low clutch solenoid or its wiring is not open or shorted to ground
- TRANS 110 Mid range clutch solenoid or wiring not open or shorted to ground
- TRANS 111 High range clutch solenoid or its wiring is not open or shorted to ground
- TRANS 112 Reverse clutch solenoid or its wiring is not open or shorted to ground
- TRANS 113 Inching clutch solenoid or its wiring is not open or shorted to ground
- TRANS 114 Even the clutch solenoid coil or its wiring is shorted to power
- TRANS 115 Odd clutch solenoid coil or wiring shorted to power
- TRANS 116 C1-2 clutch solenoid coil or wiring shorted to power
- TRANS 117 C3-4 clutch solenoid coil or wiring shorted to power
- TRANS 118 C5-6 clutch solenoid coil or wiring shorted to power
- TRANS 119 Main clutch solenoid coil or wiring shorted to power
- TRANS 120 Low clutch solenoid coil or wiring shorted to power
- TRANS 121 Medium range clutch solenoid coil or wiring shorted to power
- TRANS 122 High range clutch solenoid coil or wiring shorted to power
- TRANS 123 Reverse clutch solenoid coil or wiring shorted to power
- TRANS 124 Chassis clutch solenoid coil or wiring shorted to power
- TRANS 125 Odd clutch not calibrated
- TRANS 126 Even the clutch is not calibrated
- TRANS 127 Clutch C1-2 not calibrated
- TRANS 128 C3-4 clutch not calibrated
- TRANS 129 C5-6 clutch not calibrated
- TRANS 130 Low clutch not calibrated
- TRANS 131 Mid frequency clutch not calibrated
- TRANS 132 High range clutch not calibrated
- TRANS 133 Reverse clutch not calibrated
- TRANS 134 Main clutch not calibrated
- TRANS 135 Lost communication with armrest controller
- TRANS 136 Loss of communication with the instrumentation controller
- TRANS 137 Front lift lock solenoid circuit short circuit or open circuit
- TRANS 138 Front suspension lift solenoid circuit short circuit or open circuit
- TRANS 139 Front suspension lower lock solenoid circuit short circuit or open circuit
- TRANS 140 Front suspension position above expected absolute limit
- TRANS 141 Front suspension position below expected absolute limit
- TRANS 142 Front suspension travel range not calibrated
- TRANS 143 Front suspension position above upper suspension range
- TRANS 144 Front suspension position below lower suspension range
- TRANS 145 Front suspension lower lock solenoid circuit short circuit or open circuit
- TRANS 146 Regulated system pressure low (below 100 psi / 689 kPa)
- TRANS 147 Regulated system pressure below 290 PSI
- TRANS 148 Short or open backup power alarm circuit
- TRANS 150 Rod end of front suspension pressure sensor (DA-R) out of range, high
- TRANS 151 Open circuit on the rod side of the front suspension pressure sensor
- TRANS 152 Front suspension pressure regulator cannot increase rod side pressure
- TRANS 153 Front suspension pressure regulator cannot reduce rod side pressure
- TRANS 154 Front suspension lock-up valve stuck by mistake (suspension does not lock)
- TRANS 155 Front suspension lockout valve stuck (suspension won’t unlock)
- TRANS 156 Check valve was installed but removed
- Trans 2009 Seat Switch Circuit Open
- Trans 2010 seat switch shorted to B+ or 5 volt reference.
- Trans 2011 Clutch Pot Circuit Open Circuit or Short to Ground
- Trans 2012 Clutch Potentiometer Short circuit to +12 volts or 5 volts reference.
- Trans 2024 none of the transmission clutches are calibrated. This will be the condition when a new controller is installed on the tractor.
- Trans 2037 Lower Clutch Pedal Switch Open Circuit or Lower Clutch Relay Stuck Open
- Trans 2047 The lower part of the clutch pedal of the clutch switch is incorrectly adjusted.
- Trans 2048 The lower part of the clutch pedal switch or the lower part of the clutch relay has a short circuit.
- Trans 2054 5 V reference too low.
- Trans 2055 No signal from wheel speed sensor.
- Trans 2056 Internal 5 V reference too high.
- Trans 2057 Internal 5 V reference too low.
- Trans 2059 1) Shift inputs indicate that the shuttle lever is in both forward and neutral positions. 2) Shift input signals indicate that the shuttle lever is in both reverse and neutral positions. Rotate the shuttle lever to release stuck switches, or try traveling in the opposite direction.
- Trans 2071 The forward switch input from the FNRP module is shorted to ground or has an open circuit.
- Trans 2072 The reverse switch input from the FNRP module is shorted to +12V or the 5V reference of the FNRP module.
- Trans 2073 Reverse switch input from FNRP unit shorted to ground or open.
- Trans 2074 FNR Not Park Switch Low Voltage Error
- Trans 2075 FNR Not Park Switch High Voltage Fault
- Trans 2110 FNR Neutral Switch Low Voltage Fault
- Trans 2111 FNR Neutral switch fault, high voltage
- Trans 2326 The engine speed from the generator, as measured by the controller, is too high.
- Trans 2327 No RPM
- Trans 2330 Transmission output rotation speed received from the sensor, measured by the controller, is too high for the desired transmission.
- Trans 2331 Transmission clutch slipping
- Trans 2342 Clutch Odd solenoid open circuit or short to ground.
- Trans 2343 Clutch solenoid, open circuit or short to ground. C33
- Trans 2344 C1-2 clutch solenoid valve – open circuit or short to ground.
- Trans 2345 Clutch solenoid C3-4 – open circuit or short to ground.
- Trans 2346 Clutch solenoid 5-6 open circuit or short to ground.
- Trans 2374 main clutch solenoid valve open circuit or short to ground.
- Trans 2347 Clutch Low Range solenoid valve open circuit or short to ground.
- Trans 2348 110 Clutch mid-range solenoid valve – open circuit or short to ground.
- Trans 2349 Clutch High Range solenoid valve open circuit or short to ground.
- Trans 2350 Reverse clutch solenoid valve open circuit or short to ground.
- Trans 2351 Chassis clutch solenoid – open circuit or short to ground
- Trans 2353 Even clutch solenoid shorted to +12V, current measured with drive off.
- Trans 2352 Odd Clutch Solenoid shorted to +12 volts, current measured with drive off.
- Trans 2354 C1-2 Clutch solenoid shorted to +12 volts, current measured with drive off..
- Trans 2355 Clutch solenoid C3-4 shorted to +12V current sensed when driver is off.
- Trans 2356 Clutch solenoid C5-6 shorted to +12 volts, current measured with drive off.
- Trans 2357 Low clutch solenoid shorted to +12 volts, current measured with drive off.
- Trans 2358 Middle Clutch Solenoid shorted to +12V, current detected when driver is off.
- Trans 2359 high coupling solenoid shorted to +12V, current measured with drive off.
- Trans 2360 Reverse Clutch Solenoid is shorted to +12V, current measured with drive off.
- Trans 2361 Travel clutch solenoid shorted to +12 volts, current measured with drive off
- Trans 2362 main clutch solenoid shorted to +12V, current measured with drive off.
- Trans 2363 The Odd Clutch not calibrated
- Trans 2364 Even the clutch is not calibrated
- Trans 2365 C1-2 clutch not calibrated
- Trans 2366 C3-4 Clutch not calibrated
- Trans 2367 C5-6 Clutch not calibrated
- Trans 2368 Low frequency clutch not calibrated
- Trans 2369 Mid Range Clutch Not Calibrated
- Trans 2370 High Clutch not calibrated
- Trans 2371 Reverse clutch not calibrated
- Trans 2372 Creep Clutch not calibrated
- Trans 2373 Master Clutch not calibrated
- Trans 2800 Auto Guidance Check Valve Actuator Malfunction
- Trans 2805 System pressure solenoid valve circuit open or shorted to ground
- Trans 2806 System pressure solenoid valve shorted to B+
- Trans 2807 Transmission output speed exceeds speed
- Trans 2809 The battery voltage is too low for the clutch solenoids to work.
- Trans 2811 Transmission Oil Temperature Hot
- Trans 2812 Transmission oil temperature sensor short to B+ or open circuit
- Trans 2813 Transmission oil temperature sensor short to ground
- Trans 2814 Integrated control panel offline
- Trans 2815 Engine Speed Generator Engine Speed Controller Engine Speed Mismatch
- Trans 2816 Variable Gearbox Pressure Accumulator Flat
- Trans 2817 regulator disconnected from CAN bus
- Trans 2818 Lost Communication with Armrest Control Module (ACM)
- Trans 2819 Lost communication with instrument controller.
- Trans 2820 Low system pressure possible Faulty or leaking hydraulic system pressure pump
- Trans 2821 System low pressure error
- Trans 2850 Parking brake sticks due to lack of power when commanded to apply.
- Trans 2851 Parking brake driver detected overcurrent or open circuit
- Trans 2852 The parking brake sticks because the solenoid is not energized when the driver commands it to apply. Possible switches for the lower brake of the service brake are open.
- Trans 2055 No signal from wheel speed sensor.
- The Trans 2873 software is not in calibration mode and the parking brake request is still active. If this error is found, then there is a bug in the software.
- Trans 2874 Parking brake commanded, gear engaged, but no parking brake request from calibration. If this error is found, then there is a bug in the software.
- Trans 2900 Torque Sensor Gap is at the larger end of tolerance (CCH only)
- Trans 2901 The signal received from the torque sensor is not in any of the fault ranges or the valid range of the normal range (CCH only)
- Trans 2902 torque sensor claimed internal fail-safe (CCH only)
- Trans 2903 Torque sensor supply voltage below 4.8 V tolerance (CCH only)
- Trans 2910 12VF1 supply voltage low. (probably blown fuse*)
- Trans 2911 12VT1 Supply voltage is low. (probably blown fuse*)
- Trans 2912 12VF2 Low voltage supply (probably blown fuse*)
- Trans 2913 12VH Supply voltage is low. (probably blown fuse*)
- Trans 2914 12VF3 supply voltage low. (probably blown fuse*)
Being a tractor mechanic is more than just wrenching on machines; it’s about bolstering the livelihoods of farmers and ensuring that agriculture thrives. With knowledge about Transmission DTCs, you’ll be better prepared to keep these agricultural workhorses operating smoothly, minimizing downtime, and ultimately contributing to a flourishing farming community.
So, whether you’re a seasoned tractor mechanic or someone venturing into this field, our guide to Transmission DTCs for New Holland and Case IH tractors is your passport to success. It’s an expedition into the heart of these magnificent machines, where every code tells a story, and every fix guarantees that agriculture keeps flourishing.
DTC Fault Code Lists of New Holland & Case IH Tractors:
