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Case IH fault codes & repair guides

All 9,847 codes· 50 per page · page 8 of 197

Case IH fault codes with controller, issue summary and a link to the full repair manual
CodeControllerIssue summaryRepair manual
121ATCTemperature select pot open/shorted to powerFull repair manual for code 121, ATC
121ENGEngine Position Sensor (8.3, 9 Liter) or Crankshaft Sensor (15 Liter) is failed.Full repair manual for code 121, ENG
121TRANS (Transmission Controller / TCU)Mid range clutch solenoid coil or its wiring shorted to power.Full repair manual for code 121, TRANS (Transmission Controller / TCU)
122ATC (Automatic Temperature Control) moduleMode Door potentiometer open circuit or shorted to power.Full repair manual for code 122, ATC (Automatic Temperature Control) module
122Engine Controller (Engine ECU)Boost Pressure Sensor voltage is too highFull repair manual for code 122, Engine Controller (Engine ECU)
122Transmission Controller (TRANS)ICU model range errorFull repair manual for code 122, Transmission Controller (TRANS)
122TRANS or UCMHigh range clutch solenoid coil or its wiring shorted to power.Full repair manual for code 122, TRANS or UCM
123ATCCab pressure sensor input shorted to powerFull repair manual for code 123, ATC
123Engine Control Module (ECM)Boost Pressure Sensor voltage is too lowFull repair manual for code 123, Engine Control Module (ECM)
123MCC (Machine Control Cluster) or MIU (Machine Interface Unit)Model received does not match the model stored the first time the controller was powered upFull repair manual for code 123, MCC (Machine Control Cluster) or MIU (Machine Interface Unit)
123TMF (Tractor Multifunction) Controller or AUX (Remote Hydraulics) ControllerAux 1st Lower Coil solenoid shorted to 12 volts.Full repair manual for code 123, TMF (Tractor Multifunction) Controller or AUX (Remote Hydraulics) Controller
123Transmission Controller (TRANS / TCU)Reverse clutch solenoid coil or its wiring is shorted to power.Full repair manual for code 123, Transmission Controller (TRANS / TCU)
124ATC (Automatic Temperature Control)Cab pressure sensor input shorted to groundFull repair manual for code 124, ATC (Automatic Temperature Control)
124Engine Controller (ENG) / Engine ECUBoost Pressure level has exceeded the warning limitFull repair manual for code 124, Engine Controller (ENG) / Engine ECU
124TMF or AUXAux 1st Lower solenoid failed open or short circuit.Full repair manual for code 124, TMF or AUX
124TRANSCreeper clutch solenoid coil or its wiring shorted to powerFull repair manual for code 124, TRANS
125ATCHigh pressure switch (+) input shorted to powerFull repair manual for code 125, ATC
125TMF (Tractor Multi-Function) Controller or AUX (Remote Auxiliary) ControllerAux 1st Raise Coil solenoid shorted to 12 voltsFull repair manual for code 125, TMF (Tractor Multi-Function) Controller or AUX (Remote Auxiliary) Controller
125Transmission Controller (TRANS / TCU)Odd clutch is not calibrated.Full repair manual for code 125, Transmission Controller (TRANS / TCU)
126ATC (Automatic Temperature Control) moduleHigh pressure switch (+) input shorted to groundFull repair manual for code 126, ATC (Automatic Temperature Control) module
126TMF (Tractor Multi-Function) or AUX (Auxiliary Remote)Aux 1st Raise solenoid failed open or short circuit.Full repair manual for code 126, TMF (Tractor Multi-Function) or AUX (Auxiliary Remote)
126TRANS (Transmission Controller / TCU)Even clutch is not calibratedFull repair manual for code 126, TRANS (Transmission Controller / TCU)
127ATCHigh pressure switch (-) input shorted to powerFull repair manual for code 127, ATC
127TMF or AUXAux 2nd Lower Coil solenoid shorted to 12 voltsFull repair manual for code 127, TMF or AUX
127TRANS (Transmission Controller)C1-2 clutch is not calibratedFull repair manual for code 127, TRANS (Transmission Controller)
127-01 - DECTransmission Controller (TCU) or Power Train/Chassis Electronic Control Module (ECM)Transmission system pressure sensor data valid, below normal range - most severeFull repair manual for code 127-01 - DEC, Transmission Controller (TCU) or Power Train/Chassis Electronic Control Module (ECM)
127-03 - DECTransmission Controller (TCU) or Electronic Control Module (ECM)Transmission system pressure sensor electrical circuit fault voltage above normalFull repair manual for code 127-03 - DEC, Transmission Controller (TCU) or Electronic Control Module (ECM)
127-04 - DECTransmission Controller (TCU)Transmission Oil Pressure - Voltage Below Normal, or Shorted to Low SourceFull repair manual for code 127-04 - DEC, Transmission Controller (TCU)
127-11 - DECDECTransmission system pressure sensor plausibility with engine RPMFull repair manual for code 127-11 - DEC, DEC
128ATC (Automatic Temperature Control)High pressure switch (-) input is shorted to groundFull repair manual for code 128, ATC (Automatic Temperature Control)
128TMF or AUXAux 2nd Lower solenoid failed open or short circuitFull repair manual for code 128, TMF or AUX
128Transmission Control Unit (TCU)C3-4 clutch is not calibratedFull repair manual for code 128, Transmission Control Unit (TCU)
129Armrest Controller (ARM)Auxiliary 5th remote valve FLOW potentiometer has failedFull repair manual for code 129, Armrest Controller (ARM)
129ATCHigh pressure cycling error (2 in 1 minute)Full repair manual for code 129, ATC
129TMF (Tractor Multifunction Controller)Aux 2nd Raise Coil solenoid shorted to 12 volts.Full repair manual for code 129, TMF (Tractor Multifunction Controller)
129Transmission Controller (TRANS / TCU)C5-6 clutch is not calibratedFull repair manual for code 129, Transmission Controller (TRANS / TCU)
130ATC (Automatic Temperature Control)Low pressure switch (+) input shorted to powerFull repair manual for code 130, ATC (Automatic Temperature Control)
130TMF (Tractor Multi-Function) Controller or AUX (Auxiliary Remote) ControllerAux 2nd Raise solenoid failed open or short circuit.Full repair manual for code 130, TMF (Tractor Multi-Function) Controller or AUX (Auxiliary Remote) Controller
130TRANS (Transmission Controller)Low range clutch is not calibrated.Full repair manual for code 130, TRANS (Transmission Controller)
131ATC (Automatic Temperature Control) moduleLow pressure switch (+) input shorted to ground.Full repair manual for code 131, ATC (Automatic Temperature Control) module
131Engine Controller (ENG / ECM)Decelerator or Hand Throttle (STD cab) Position potentiometer voltage is too highFull repair manual for code 131, Engine Controller (ENG / ECM)
131TMF (Tractor Multi-Function) Controller or AUX (Auxiliary Remote) ControllerAux 3rd Lower Coil solenoid shorted to 12 volts.Full repair manual for code 131, TMF (Tractor Multi-Function) Controller or AUX (Auxiliary Remote) Controller
131Transmission Controller (TRANS / TCU)Mid range clutch is not calibratedFull repair manual for code 131, Transmission Controller (TRANS / TCU)
132ATC (Automatic Temperature Control) moduleLow pressure switch (-) input shorted to powerFull repair manual for code 132, ATC (Automatic Temperature Control) module
132ENG (Engine Controller / ECM)Decelerator or Hand Throttle (STD cab) Position potentiometer voltage is too low.Full repair manual for code 132, ENG (Engine Controller / ECM)
132TMF (Tractor Multi-Function)Aux 3rd Lower solenoid failed open or short circuit.Full repair manual for code 132, TMF (Tractor Multi-Function)
132Transmission Controller (TRANS or TCU)High range clutch is not calibratedFull repair manual for code 132, Transmission Controller (TRANS or TCU)
133ATC (Automatic Temperature Control)Low pressure switch (-) input shorted to groundFull repair manual for code 133, ATC (Automatic Temperature Control)
133Engine Controller (ENG)Decelerator (STD cab) Position potentiometer voltage is too high.Full repair manual for code 133, Engine Controller (ENG)
133TMF (Tractor Multi-Function) or AUX (Auxiliary Remote Controller)Aux 3rd Raise Coil solenoid shorted to 12 voltsFull repair manual for code 133, TMF (Tractor Multi-Function) or AUX (Auxiliary Remote Controller)