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Case IH fault codes & repair guides

All 9,847 codes· 50 per page · page 13 of 197

Case IH fault codes with controller, issue summary and a link to the full repair manual
CodeControllerIssue summaryRepair manual
442ECMBattery Voltage Is Too HighFull repair manual for code 442, ECM
443Engine Controller (ECM / ENG)Decelerator or Hand Throttle (STD cab) 5 Volt Supply voltage is too lowFull repair manual for code 443, Engine Controller (ECM / ENG)
444Engine Control Module (ENG / ECM)Low voltage detected at OEM 5 volt supplyFull repair manual for code 444, Engine Control Module (ENG / ECM)
449Engine Control Module (ECM)Fuel Pressure level has exceeded the warning limitFull repair manual for code 449, Engine Control Module (ECM)
451Engine Control Module (ECM)Fuel Pressure Sensor voltage is too highFull repair manual for code 451, Engine Control Module (ECM)
452Engine Control Module (ECM / ENG)Fuel Pressure Sensor voltage is too low.Full repair manual for code 452, Engine Control Module (ECM / ENG)
456Engine Controller (ENG)Fuel Pressure in pump is not changing with operating conditions.Full repair manual for code 456, Engine Controller (ENG)
465Engine Control Unit (ECU) / Engine ControllerWastegate 1 voltage is too highFull repair manual for code 465, Engine Control Unit (ECU) / Engine Controller
466ENG (Engine Controller / Engine ECU)Wastegate 1 voltage is too lowFull repair manual for code 466, ENG (Engine Controller / Engine ECU)
482Engine ECUFuel Pressure Sensor voltage lowFull repair manual for code 482, Engine ECU
483Engine Control Module (ECM)Rear Bank Post Actuactor Pressure voltage highFull repair manual for code 483, Engine Control Module (ECM)
484Engine Control Module (ECM)Rear Bank Post Actuator Pressure voltage lowFull repair manual for code 484, Engine Control Module (ECM)
485ENGRear Fueling actuator overfuelingFull repair manual for code 485, ENG
486Engine Controller (ENG) / Engine Control Module (ECM)Rear Fueling actuator underfuelingFull repair manual for code 486, Engine Controller (ENG) / Engine Control Module (ECM)
488Engine Control Module (ECM) / Engine ECUIntake Manifold Temperature level has exceeded the warning limitFull repair manual for code 488, Engine Control Module (ECM) / Engine ECU
489ENGMeasured Speed Sensor data lowFull repair manual for code 489, ENG
491Engine ECUWastegate 2 voltage is too highFull repair manual for code 491, Engine ECU
492Engine Control Module (ECM) / ENGWastegate 2 voltage is too lowFull repair manual for code 492, Engine Control Module (ECM) / ENG
493Engine Control Module (ENG / ECM)The Injection Control Identifier Circuit in the harness has failedFull repair manual for code 493, Engine Control Module (ENG / ECM)
496Engine Control Module (ENG / ECM)Engine Speed / Position Sensor #2 supply is too low.Full repair manual for code 496, Engine Control Module (ENG / ECM)
521-00 - ITBVITBVService brake disagreement - pedal not pressed, tractor service brake pressure high.Full repair manual for code 521-00 - ITBV, ITBV
521-01 - ITBVITBVService brake disagreementFull repair manual for code 521-01 - ITBV, ITBV
521-16 - ITBVITBV (Trailer Brake Control) moduleService Brake Pedal Switch Circuit FaultFull repair manual for code 521-16 - ITBV, ITBV (Trailer Brake Control) module
522-16 - DECDECTransmission clutch slipping data valid, above normal range - moderately severeFull repair manual for code 522-16 - DEC, DEC
524Engine Control Module (ECM) / Engine ECUError detected on high speed governor droop selection switchFull repair manual for code 524, Engine Control Module (ECM) / Engine ECU
527Engine Controller (ENG / ECM)Cab pressurization/Ether relay coil circuit is shorted high or openFull repair manual for code 527, Engine Controller (ENG / ECM)
529Engine Control Module (ECM)Output B driver shorted high or openFull repair manual for code 529, Engine Control Module (ECM)
539Engine Control Module (ECM) / ENGThe Injection Control Valve Transorb in the harness has failed. (open circuit)Full repair manual for code 539, Engine Control Module (ECM) / ENG
544-02 - VCMVehicle Control Module (VCM)Invalid reference torque value received from engine controllerFull repair manual for code 544-02 - VCM, Vehicle Control Module (VCM)
546Engine Control Module (ECM)Fuel Pressure sensor voltage is too highFull repair manual for code 546, Engine Control Module (ECM)
547Engine Controller (ENG / ECM)Fuel Pressure sensor voltage is too low.Full repair manual for code 547, Engine Controller (ENG / ECM)
551Engine Control Module (ECM / ENG)Hand Throttle (STD cab) Idle Validation Switches are both openFull repair manual for code 551, Engine Control Module (ECM / ENG)
553Engine Control Module (ECM)Front fueling actuator overfuelingFull repair manual for code 553, Engine Control Module (ECM)
559ENGINE (ENG) Controller / Engine Control Module (ECM)Front fueling actuator underfuelingFull repair manual for code 559, ENGINE (ENG) Controller / Engine Control Module (ECM)
564-01 - DECDECMechanical front drive clutch solenoid electrical circuit fault voltage lowFull repair manual for code 564-01 - DEC, DEC
564-03 - DECDECVoltage Above Normal, Or Shorted To High SourceFull repair manual for code 564-03 - DEC, DEC
564-04 - DECDECMechanical front drive (MFD) clutch solenoid electrical circuit fault voltage below normalFull repair manual for code 564-04 - DEC, DEC
564-05 - DECTransmission Control Unit (TCU)Mechanical front drive clutch solenoid electrical circuit fault current below normalFull repair manual for code 564-05 - DEC, Transmission Control Unit (TCU)
564-06 - DECTransmission Controller (TCM), PTO Controller, or Armrest Control Module (ACM)Mechanical front drive (MFD) clutch solenoid electrical circuit fault current above normalFull repair manual for code 564-06 - DEC, Transmission Controller (TCM), PTO Controller, or Armrest Control Module (ACM)
564-16 - DECDECMechanical front drive clutch solenoid electrical circuit fault voltage highFull repair manual for code 564-16 - DEC, DEC
566-01 - DECDECRear differential lock control solenoid electrical circuit fault voltage low.Full repair manual for code 566-01 - DEC, DEC
566-03 - DECDEC (Drivetrain Electronic Controller)Differential Lock State - Central Rear: Voltage above normal or shorted high.Full repair manual for code 566-03 - DEC, DEC (Drivetrain Electronic Controller)
566-04 - DECDECRear differential lock control solenoid electrical circuit fault voltage below normalFull repair manual for code 566-04 - DEC, DEC
566-05 - DECDECRear differential lock control solenoid electrical circuit fault - current below normalFull repair manual for code 566-05 - DEC, DEC
566-06 - DECDECDifferential Lock State - Central Rear (Rear Differential Lock) Current above normal or grounded circuitFull repair manual for code 566-06 - DEC, DEC
566-16 - DECDEC (Drive Electronic Controller) or TCU (Transmission Control Unit)Rear differential lock control solenoid electrical circuit fault voltage highFull repair manual for code 566-16 - DEC, DEC (Drive Electronic Controller) or TCU (Transmission Control Unit)
581Engine Controller (ENG) / Engine Control Module (ECM)Fuel inlet Pressure Sensor voltage is too high.Full repair manual for code 581, Engine Controller (ENG) / Engine Control Module (ECM)
582Engine Control Module (ECM)Fuel inlet Pressure Sensor voltage is too lowFull repair manual for code 582, Engine Control Module (ECM)
583Engine Control Module (ECM / ENG)Fuel Inlet Pressure Sensor voltage out of range high or lowFull repair manual for code 583, Engine Control Module (ECM / ENG)
587-00 - VCMVCM (Vehicle Control Module)VCM: Vehicle controller supply voltage lowFull repair manual for code 587-00 - VCM, VCM (Vehicle Control Module)