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Case IH fault codes & repair guides

All 9,847 codes· 50 per page · page 186 of 197

Case IH fault codes with controller, issue summary and a link to the full repair manual
CodeControllerIssue summaryRepair manual
P24Engine Electronic Control Unit (EECU) / Engine Electronic Management (EEM / EEM3)Boost Air Temperature Sensor, Shorted To Low SourceFull repair manual for code P24, Engine Electronic Control Unit (EECU) / Engine Electronic Management (EEM / EEM3)
P25Engine Control Unit (ECU) / EDC 7 / VECUBoost Air Temperature Sensor, Data Valid But Above Normal RangeFull repair manual for code P25, Engine Control Unit (ECU) / EDC 7 / VECU
P26Engine Management Unit (EMU) / Vehicle Electronic Control Unit (VECU)Boost Air Temperature Sensor (PHY), Grounded Or Current Above Normal RangeFull repair manual for code P26, Engine Management Unit (EMU) / Vehicle Electronic Control Unit (VECU)
P27Electronic Management Unit (EMU) or PTO ControllerPTO Speed Sensor Open CircuitFull repair manual for code P27, Electronic Management Unit (EMU) or PTO Controller
P27Tractor Electronic Management Unit / PTO Controller or Engine Electronic Control Unit (EECU) / Engine Control Module (ECM)PTO Speed Sensor Open Circuit / Boost Air Temperature Sensor Data IncorrectFull repair manual for code P27, Tractor Electronic Management Unit / PTO Controller or Engine Electronic Control Unit (EECU) / Engine Control Module (ECM)
P28Engine Control Unit (ECU)Boost Air Temperature Sensor (PHY), Data Valid But Above Normal RangeFull repair manual for code P28, Engine Control Unit (ECU)
P29Engine Electronic Control Unit (EECU) or Vehicle Electronic Control Unit (VECU)Boost Air Temperature Sensor (PHY), Shorted To High SourceFull repair manual for code P29, Engine Electronic Control Unit (EECU) or Vehicle Electronic Control Unit (VECU)
P2CTransmission Control Unit (TCU) / Main Vehicle PCUBattery Voltage, Data Valid But Above Normal RangeFull repair manual for code P2C, Transmission Control Unit (TCU) / Main Vehicle PCU
P2DEngine Control Module (ECM) / Power Control Unit (PCU)Battery Voltage, Open Circuit Or Current Below NormalFull repair manual for code P2D, Engine Control Module (ECM) / Power Control Unit (PCU)
P2EEngine ECU or Transmission PCUBattery Voltage, Shorted To Low SourceFull repair manual for code P2E, Engine ECU or Transmission PCU
P3Engine Control Module (ECM) or Vehicle Control Module (VCM) / Electronic Management Unit (EMU)Foot Throttle Position Sensor, Shorted To Low SourceFull repair manual for code P3, Engine Control Module (ECM) or Vehicle Control Module (VCM) / Electronic Management Unit (EMU)
P31Electronic Management Unit (EMU)Steering Sensor Out Of Range - (Maximum Voltage)Full repair manual for code P31, Electronic Management Unit (EMU)
P31Engine Controller (ECU)Boost Air Pressure Sensor, Grounded Or Current Above Normal RangeFull repair manual for code P31, Engine Controller (ECU)
P32EMUSteering Sensor Out Of RangeFull repair manual for code P32, EMU
P32Engine Control Unit (EDC) / Powertrain Control Unit (PCU)Boost Air Pressure Sensor, Open Circuit Or Current Below Normal RangeFull repair manual for code P32, Engine Control Unit (EDC) / Powertrain Control Unit (PCU)
P33Electronic Management Unit (EMU) / PTO ControllerRear PTO Cab Switch Momentary Contact Open (or Open Circuit)Full repair manual for code P33, Electronic Management Unit (EMU) / PTO Controller
P33Engine Management Unit (EMU) or Transmission/EDC (Electronic Diesel Control) controllerBoost Air Pressure Sensor, Shorted To Low SourceFull repair manual for code P33, Engine Management Unit (EMU) or Transmission/EDC (Electronic Diesel Control) controller
P34Electronic Management Unit (EMU)Fender Mounted Rear PTO Switch (if fitted) Open Circuit Or Short To GroundFull repair manual for code P34, Electronic Management Unit (EMU)
P34Engine Control Unit (ENG / ECU) or Powertrain Control Unit (PCU)Boost Air Pressure Sensor, Shorted To High SourceFull repair manual for code P34, Engine Control Unit (ENG / ECU) or Powertrain Control Unit (PCU)
P35Electronic Management Unit (EMU)Fender Mounted Rear PTO Switch Input Short To +12v Or Short Across Fender Switch WiresFull repair manual for code P35, Electronic Management Unit (EMU)
P35Engine Control Unit (ECU / ECM)Boost Air Pressure Sensor (PHY), Data Valid But Above Normal RangeFull repair manual for code P35, Engine Control Unit (ECU / ECM)
P36Electronic Management Unit (EMU)Rear PTO Failure To Start - Relay Or Switch Wiring FaultFull repair manual for code P36, Electronic Management Unit (EMU)
P36PTO / Rear Hitch Control Module (P36) or Engine Control Unit / EDC 7 (T36)Rear PTO Failure To Start - Relay Or Switch Wiring Fault (P36) / Boost Air Pressure Sensor (PHY), Data Incorrect (T36)Full repair manual for code P36, PTO / Rear Hitch Control Module (P36) or Engine Control Unit / EDC 7 (T36)
P37Electronic Management Unit (EMU)Rear PTO Cab Switch Momentary Contact is Stuck Closed (Longer Than 30 Seconds) OR has an Open CircuitFull repair manual for code P37, Electronic Management Unit (EMU)
P37Instrument Cluster / Rear PTO Controller (XCM) or Engine Control Unit (EDC / PCU)Rear PTO cab switch momentary contact stuck closed (longer than 30 seconds) / Boost Air Pressure Sensor (PHY), Shorted To High SourceFull repair manual for code P37, Instrument Cluster / Rear PTO Controller (XCM) or Engine Control Unit (EDC / PCU)
P38Digital Instrument Cluster (EIC) or Electronic Management Unit (EMU)Cab And Fender Rear PTO Controls Operated Within 2 Seconds Of Each OtherFull repair manual for code P38, Digital Instrument Cluster (EIC) or Electronic Management Unit (EMU)
P38PCU (Power Control Unit) / Transmission ControllerVehicle CAN Bus Transmit, Data Valid But Above Normal RangeFull repair manual for code P38, PCU (Power Control Unit) / Transmission Controller
P39Digital Instrument Cluster (DIC) / Electronic Management Unit (EMU) / System Control Module (SCM)Incorrect voltage on fender mounted rear PTO switch input (if fitted)Full repair manual for code P39, Digital Instrument Cluster (DIC) / Electronic Management Unit (EMU) / System Control Module (SCM)
P39Engine Control Module (ECM) or Central Controller (XCM)Vehicle CAN Bus Transmit, Shorted To High SourceFull repair manual for code P39, Engine Control Module (ECM) or Central Controller (XCM)
P3APCUPCU Initialization, Data Valid But Above Normal RangeFull repair manual for code P3A, PCU
P3BPCU (Power Control Unit)PCU Initialization, Shorted To High SourceFull repair manual for code P3B, PCU (Power Control Unit)
P3CTransmission Control Unit or central powertrain controllerSolenoid Valve, Data Valid But Below Normal RangeFull repair manual for code P3C, Transmission Control Unit or central powertrain controller
P3DTransmission Controller (TCU) or EDC (Electronic Draft Control)Solenoid Valve, Data IncorrectFull repair manual for code P3D, Transmission Controller (TCU) or EDC (Electronic Draft Control)
P3ETransmission Control Module (PCU)Solenoid valve, data valid but above normal range.Full repair manual for code P3E, Transmission Control Module (PCU)
P3FEngine Control Module (ECM)PSG Message, Data Valid But Above Normal RangeFull repair manual for code P3F, Engine Control Module (ECM)
P4Engine ECUFoot Throttle Position Sensor, Shorted To High SourceFull repair manual for code P4, Engine ECU
P40Digital Instrument Cluster (DIC) or Tractor Electronic Management Unit / Electronic PTO ControllerPTO relay coil short to +12V or open circuitFull repair manual for code P40, Digital Instrument Cluster (DIC) or Tractor Electronic Management Unit / Electronic PTO Controller
P40Engine Control Module (ECM) and Pump Control Unit (PCU)PSG Message, Shorted To High SourceFull repair manual for code P40, Engine Control Module (ECM) and Pump Control Unit (PCU)
P41Electronic Management Unit (EMU)PTO Fender Switch Relay Coil Short To Ground (P41) / Msg1 Message, Data Valid But Above Normal Range (T41)Full repair manual for code P41, Electronic Management Unit (EMU)
P41Electronic Management Unit (EMU)PTO Fender Switch Relay Short To GroundFull repair manual for code P41, Electronic Management Unit (EMU)
P42Engine Control Module (ECM)Msg1 Message, Shorted To High SourceFull repair manual for code P42, Engine Control Module (ECM)
P46Engine Control Module (ECM)CAN CCVSS Message, Data IncorrectFull repair manual for code P46, Engine Control Module (ECM)
P47Electronic Management Unit (EMU) / Transmission ControllerCAN CCVSS Message, Data Valid But Above Normal RangeFull repair manual for code P47, Electronic Management Unit (EMU) / Transmission Controller
P4ADigital Instrument Cluster (EIC) or Engine Controller (EDC)Coolant Temperature Sensor, Grounded Or Current Above Normal RangeFull repair manual for code P4A, Digital Instrument Cluster (EIC) or Engine Controller (EDC)
P4BEngine ECU (Electronic Diesel Control / EDC)Coolant Temperature Sensor, Open Circuit Or Current Below Normal RangeFull repair manual for code P4B, Engine ECU (Electronic Diesel Control / EDC)
P4CEngine Control Unit (ECU / EDC)Coolant Temperature Sensor, Shorted To Low SourceFull repair manual for code P4C, Engine Control Unit (ECU / EDC)
P4DEngine Control Unit (ECU)Coolant Temperature Sensor, Data Valid But Above Normal RangeFull repair manual for code P4D, Engine Control Unit (ECU)
P4EEngine Controller (EDC - Electronic Diesel Control)Coolant Temperature Sensor (PHY), Data Valid But Above Normal RangeFull repair manual for code P4E, Engine Controller (EDC - Electronic Diesel Control)
P4FEngine Control Module (ECM)Coolant Temperature Sensor (PHY), Data IncorrectFull repair manual for code P4F, Engine Control Module (ECM)
P5Electronic Engine Controller (ECU) or PTO/Hand Throttle Controller (XCM)CAN AE Message (Torque Set point), Data Valid But Below Normal RangeFull repair manual for code P5, Electronic Engine Controller (ECU) or PTO/Hand Throttle Controller (XCM)