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Case IH fault codes & repair guides

All 9,847 codes· 50 per page · page 12 of 197

Case IH fault codes with controller, issue summary and a link to the full repair manual
CodeControllerIssue summaryRepair manual
286Engine Control Module (ECM)J1939 Parameter was set to be multiplexed, but not available from all sources (config error)Full repair manual for code 286, Engine Control Module (ECM)
287ENG (Engine Controller / Engine ECU)Multiplexing throttle parameter and a data error was received - data invalidFull repair manual for code 287, ENG (Engine Controller / Engine ECU)
288Engine Control Module (ECM / ENG)SAE J1939 Multiplexing Remote Throttle Parameter and a Data Error was Received - Data InvalidFull repair manual for code 288, Engine Control Module (ECM / ENG)
293ENGHydraulic Fan Hydraulic Oil Temperature Sensor Voltage is too highFull repair manual for code 293, ENG
294Engine Controller (ENG / Engine ECM)Hydraulic Fan Hydraulic Oil Temperature Sensor Voltage is too lowFull repair manual for code 294, Engine Controller (ENG / Engine ECM)
295ENG (Engine Control Module / ECM)Ambient Air Pressure data invalidFull repair manual for code 295, ENG (Engine Control Module / ECM)
297Engine Control Module (ECM / ENG)OEM Pressure Sensor Voltage is too high.Full repair manual for code 297, Engine Control Module (ECM / ENG)
298Engine Control Module (ECM) / ENGOEM Pressure Sensor Voltage is too lowFull repair manual for code 298, Engine Control Module (ECM) / ENG
299Engine Controller (ECM / ENG)Engine Shutdown by other than keyswitch (i.e. via data bus command)Full repair manual for code 299, Engine Controller (ECM / ENG)
319ENGINE (ECM) CONTROLLERReal Time Clock in controller has lost powerFull repair manual for code 319, ENGINE (ECM) CONTROLLER
328Engine Controller (ENG)Rear Pumping element is failedFull repair manual for code 328, Engine Controller (ENG)
329Engine Controller (ENG / ECM)CAPS Pump has an overpumping failure.Full repair manual for code 329, Engine Controller (ENG / ECM)
338ENG (Engine Controller / ECM)Idle Shutdown Vehicle Accessory Relay Voltage is too highFull repair manual for code 338, ENG (Engine Controller / ECM)
339Engine Control Module (ECM)Idle Shutdown Vehicle Accessory Relay Voltage is too lowFull repair manual for code 339, Engine Control Module (ECM)
341Engine Controller (ECM / ECU)All data written during powerdown cycle was lost (checksum error)Full repair manual for code 341, Engine Controller (ECM / ECU)
343Engine ControllerEngine Controller Failure -- Hardware FailureFull repair manual for code 343, Engine Controller
349ENG (Engine Controller / Engine ECU)Measured Speed is too high.Full repair manual for code 349, ENG (Engine Controller / Engine ECU)
352Engine Controller (ENG)5 Volt Sensor Supply voltage is too lowFull repair manual for code 352, Engine Controller (ENG)
378Engine Control Module (ECM)Front Fueling current is too low / Fueling Actuator Number 1 - Open Circuit (Front)Full repair manual for code 378, Engine Control Module (ECM)
379ENG (Engine Controller / ECM)Front fueling current is too high.Full repair manual for code 379, ENG (Engine Controller / ECM)
381ENG (Engine Controller / Engine ECU)Error detected in cold start relay 1Full repair manual for code 381, ENG (Engine Controller / Engine ECU)
382ENG / ECUError detected in cold start relay 2Full repair manual for code 382, ENG / ECU
385Engine Control Module (ECM)5 Volt Sensor Supply voltage is too high.Full repair manual for code 385, Engine Control Module (ECM)
386Engine Controller (ENG / ECM)5 Volt Sensor Supply voltage is too highFull repair manual for code 386, Engine Controller (ENG / ECM)
387Engine Controller (ENG / ECM)Decelerator or Hand Throttle (STD cab) 5 Volt Supply voltage is too highFull repair manual for code 387, Engine Controller (ENG / ECM)
388ENGEngine Brake driver 1 circuit failureFull repair manual for code 388, ENG
392ENGEngine Brake driver 2 circuit failureFull repair manual for code 392, ENG
393ENGEngine Brake driver 3 circuit failureFull repair manual for code 393, ENG
394Engine Controller (ENG) / Engine Control Module (ECM)Front Timing current is too low.Full repair manual for code 394, Engine Controller (ENG) / Engine Control Module (ECM)
395Engine Controller (ECM)Front Timing current is too high.Full repair manual for code 395, Engine Controller (ECM)
396Engine Control Module (ECM)Rear Fueling current is too low.Full repair manual for code 396, Engine Control Module (ECM)
397Engine Control Module (ECM)Rear Fueling current is too highFull repair manual for code 397, Engine Control Module (ECM)
398Engine Control Module (ECM)Rear Timing current is too lowFull repair manual for code 398, Engine Control Module (ECM)
399Engine Control Module (ECM)Rear Timing current is too highFull repair manual for code 399, Engine Control Module (ECM)
412ENG (Engine Control Module / ECM)J1708 data link cannot transmitFull repair manual for code 412, ENG (Engine Control Module / ECM)
414Engine Control Module (ECM)J1708 data link not fast enoughFull repair manual for code 414, Engine Control Module (ECM)
415Engine Control Unit (ENG / Engine ECU)Oil Pressure level has fallen below the very low warning limitFull repair manual for code 415, Engine Control Unit (ENG / Engine ECU)
418ENG (Engine Control Module / Engine ECU)Water in Fuel sensor indicates the water in the fuel filter needs to be drained.Full repair manual for code 418, ENG (Engine Control Module / Engine ECU)
419Engine Control Module (ECM) / Engine ECUBoost Pressure data invalidFull repair manual for code 419, Engine Control Module (ECM) / Engine ECU
422Engine Controller (ENG / ECM)Engine Coolant Level Sensor (optional) has failed or the jumper plug is missingFull repair manual for code 422, Engine Controller (ENG / ECM)
426Engine Control Module (ECM)SAE J1939 Data Link - Cannot TransmitFull repair manual for code 426, Engine Control Module (ECM)
427Engine Controller (ENG)J1939 data link not fast enoughFull repair manual for code 427, Engine Controller (ENG)
428ENGINE (ECM) ControllerWater in Fuel Sensor Circuit - Voltage Above Normal or Shorted to High SourceFull repair manual for code 428, ENGINE (ECM) Controller
429Engine Control Module (ECM)Water in Fuel Sensor voltage is too lowFull repair manual for code 429, Engine Control Module (ECM)
431Engine Controller (ECM / ENG)Hand Throttle (STD cab) Idle Validation Switches are both closedFull repair manual for code 431, Engine Controller (ECM / ENG)
432Engine Controller (ENG / ECU)Hand Throttle (STD cab) position potentiometer and switches disagreeFull repair manual for code 432, Engine Controller (ENG / ECU)
433ENG (Engine Controller / Engine ECU)Boost Pressure level disagrees with engine operation conditions (speed & power)Full repair manual for code 433, ENG (Engine Controller / Engine ECU)
434Engine Control Module (ECM)Unswitched 12 volt supply voltage disconnected without normal key off sequenceFull repair manual for code 434, Engine Control Module (ECM)
435Engine Control Unit (ENG / Engine Controller)Engine oil pressure data is invalid.Full repair manual for code 435, Engine Control Unit (ENG / Engine Controller)
441Engine Controller (ENG) / Engine Control Module (ECM)Battery Voltage is too Low (less than 6 volts) / Battery 1 Voltage - Data Valid But Below Normal Operational RangeFull repair manual for code 441, Engine Controller (ENG) / Engine Control Module (ECM)