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Case IH fault codes & repair guides

All 9,847 codes· 50 per page · page 123 of 197

Case IH fault codes with controller, issue summary and a link to the full repair manual
CodeControllerIssue summaryRepair manual
19145 (DTC 647A) - ECUEngine Control Unit (ECU) / EEM4 / DCUDEF/AdBlue dosing valve actuator short circuit to battery failureFull repair manual for code 19145 (DTC 647A) - ECU, Engine Control Unit (ECU) / EEM4 / DCU
19146DCU (Dosing Control Unit)Dosing Valve (electrical) | short circuit to ground | P2048 Reductant Injector - circuit low.Full repair manual for code 19146, DCU (Dosing Control Unit)
19147—Dosing Valve (Electrical) FaultFull repair manual for code 19147
19147Case Ih Dosing Control Unit DcuDosing Valve (Electrical) – Open Load – P2047 Reductant Injector – Circuit OpenFull repair manual for code 19147, Case Ih Dosing Control Unit Dcu
19148DCU (Dosing Control Unit)Dosing Valve (electrical) | Dosing valve permanent 'ON' (detection via fast decay) | P209B Reagent-dosing nozzle pressure too high.Full repair manual for code 19148, DCU (Dosing Control Unit)
19149DCU (Dosing Control Unit) / EDC (Electronic Diesel Control / Engine Control Unit)Dosing Valve (electrical) – short circuit to ground / Reductant Injector - circuit LowFull repair manual for code 19149, DCU (Dosing Control Unit) / EDC (Electronic Diesel Control / Engine Control Unit)
19149 (DTC 737A) - ECUEngine Control Unit (ECU)DEF/AdBlue dosing valve actuator short circuit to ground failureFull repair manual for code 19149 (DTC 737A) - ECU, Engine Control Unit (ECU)
19150DCU (Dosing Control Unit)Dosing Valve (electrical) – Dosing valve permanent "ON" (detection via fast decay) / Reagent - dosing nozzle - pressure too high.Full repair manual for code 19150, DCU (Dosing Control Unit)
19151ECMMissing DEF Quality Sensor CAN FrameFull repair manual for code 19151, ECM
19152Engine Control Unit (ECU / EDC)Replace DEF/AdBlue Quality Sensor - Internal Open Load (reported via CAN Frame ComRx_CRI1)Full repair manual for code 19152, Engine Control Unit (ECU / EDC)
19153 (DTC 624E) - ECUEngine Control Module (ECM) or Dosing Control Unit (DCU) / SCR control moduleDEF/AdBlue quality sensor internal failure (short circuit to battery error)Full repair manual for code 19153 (DTC 624E) - ECU, Engine Control Module (ECM) or Dosing Control Unit (DCU) / SCR control module
19153Engine Control Unit (ECU)DEF/AdBlue dosing valve actuator short circuit to battery in high sideFull repair manual for code 19153, Engine Control Unit (ECU)
19154DCU (Dosing Control Unit)UREA Pump speed | pump motor unplugged | P208B Reagent-pump not deliveringFull repair manual for code 19154, DCU (Dosing Control Unit)
19154DCU (Dosing Control Unit)DEF/AdBlue supply module pump temperature is too low to activate pumpFull repair manual for code 19154, DCU (Dosing Control Unit)
19154 (DTC 325A) - ECUDCU (Dosing Control Unit) / ACM (Aftertreatment Control Module)DEF/AdBlue supply module pump temperature is too low to activate pump / UREA Pump speed - pump motor unplugged - P208B reagent-pump not deliveringFull repair manual for code 19154 (DTC 325A) - ECU, DCU (Dosing Control Unit) / ACM (Aftertreatment Control Module)
19155DCUDEF/AdBlue Supply Module Pump Motor Speed DeviationFull repair manual for code 19155, DCU
19155 (F-4374-16) - ECUDCU (Dosing Control Unit)DEF/AdBlue Supply Module Pump Motor Speed DeviationFull repair manual for code 19155 (F-4374-16) - ECU, DCU (Dosing Control Unit)
19156DCU (Dosing Control Unit)DEF/AdBlue supply module pump motor severe speed deviationFull repair manual for code 19156, DCU (Dosing Control Unit)
19156 (F-4374-00) - ECUDCU (Dosing Control Unit) or EEM4 (Engine Electronic Module) / PCMDEF/AdBlue supply module pump motor severe speed deviationFull repair manual for code 19156 (F-4374-00) - ECU, DCU (Dosing Control Unit) or EEM4 (Engine Electronic Module) / PCM
19156 (DTC 335A) - ECUEngine ECUDEF/AdBlue supply module pump motor severe speed deviationFull repair manual for code 19156 (DTC 335A) - ECU, Engine ECU
19157DCU (Dosing Control Unit)UREA Pump speed | Hall sensors defect | P208B Reagent-pump not deliveringFull repair manual for code 19157, DCU (Dosing Control Unit)
19158Engine Control Module (ECM) or Aftertreatment Control Module (ACM)DEF/AdBlue quality sensor internal failure (Short circuit to ground error)Full repair manual for code 19158, Engine Control Module (ECM) or Aftertreatment Control Module (ACM)
19158 (DTC 734E) - ECUEngine Control Unit (ECU)Replacement of the DEF/AdBlue quality sensor - Short to internal ground (reported via CAN structure ComRx_CRI1)Full repair manual for code 19158 (DTC 734E) - ECU, Engine Control Unit (ECU)
19159Engine Control Module (ECM) or Dosing Control Unit (DCU)DEF/AdBlue quality sensor internal failure (Concentration value is higher than expected)Full repair manual for code 19159, Engine Control Module (ECM) or Dosing Control Unit (DCU)
19159 (DTC 144E) - ECUEngine ECU (Electronic Control Unit)DEF/AdBlue quality sensor internal failure (concentration value is higher than expected)Full repair manual for code 19159 (DTC 144E) - ECU, Engine ECU (Electronic Control Unit)
19160 (DTC 254E) - ECUEngine Control Unit (ECU)DEF/AdBlue quality sensor internal failure (Concentration value is lower than expected)Full repair manual for code 19160 (DTC 254E) - ECU, Engine Control Unit (ECU)
19161Engine Control Module (ECM)DEF/AdBlue quality sensor internal failure (Internal fault)Full repair manual for code 19161, Engine Control Module (ECM)
19162Engine Control Unit (ECU)Replace DEF/AdBlue Quality Sensor - Internal Open circuit of the temperature sensor located in the DEF/AdBlue Quality sensorFull repair manual for code 19162, Engine Control Unit (ECU)
19163DCU (Dosing Control Unit)Cooling control valve short circuit to UBat or open load | short circuit to battery | P20A3 Vent valve (Reductant Purge Control Valve) - short circuit highFull repair manual for code 19163, DCU (Dosing Control Unit)
19164DCU (Dosing Control Unit)Cooling control valve short circuit to UBat or open load | Open load | P20A0 Vent valve (Reductant Purge Control Valve) - open circuitFull repair manual for code 19164, DCU (Dosing Control Unit)
19165Engine Control Module (ECM / ECU)DEF/AdBlue quality sensor internal failure (Temperature sensor circuit short to battery)Full repair manual for code 19165, Engine Control Module (ECM / ECU)
19165 (DTC 684E) - ECUEngine Control Unit (ECU) / Aftertreatment Control Module (ACM)DEF/AdBlue Quality Sensor Internal Short Circuit to BatteryFull repair manual for code 19165 (DTC 684E) - ECU, Engine Control Unit (ECU) / Aftertreatment Control Module (ACM)
19166Engine Control Module (ECM) or Denoxtronic Control Unit (DCU) / SCR ControllerDEF/AdBlue quality sensor internal failure (Temperature sensor circuit short to ground)Full repair manual for code 19166, Engine Control Module (ECM) or Denoxtronic Control Unit (DCU) / SCR Controller
19166 (DTC 794E) - ECUEngine Control Unit (ECU)DEF/AdBlue quality sensor internal failureFull repair manual for code 19166 (DTC 794E) - ECU, Engine Control Unit (ECU)
19167Engine Control Module (ECM) or Dosing Control Unit (DCU)DEF/AdBlue quality sensor internal failure (Temperature sensor value is higher than expected)Full repair manual for code 19167, Engine Control Module (ECM) or Dosing Control Unit (DCU)
19167 (DTC 1A4E) - ECUEngine Control Unit (ECU)DEF/AdBlue quality sensor internal failure (Temperature sensor value is higher than expected)Full repair manual for code 19167 (DTC 1A4E) - ECU, Engine Control Unit (ECU)
19168 (DTC 1B4E) - ECUEngine Control Module (ECM) or Dosing Control Unit (DCU)DEF/AdBlue quality sensor internal failure (Temperature sensor value is lower than expected)Full repair manual for code 19168 (DTC 1B4E) - ECU, Engine Control Module (ECM) or Dosing Control Unit (DCU)
19168Engine Control Unit (ECU) or Dosing Control Unit (DCU)DEF/AdBlue quality sensor internal failure (Temperature sensor value is lower than expected)Full repair manual for code 19168, Engine Control Unit (ECU) or Dosing Control Unit (DCU)
19169Engine Control Module (ECM) or SCR/DEF dosing control moduleDEF/AdBlue quality sensor internal failure (Temperature sensor failure)Full repair manual for code 19169, Engine Control Module (ECM) or SCR/DEF dosing control module
19169 (DTC 4C4E) - ECUEngine Control Unit (ECU) / SCR Control ModuleDEF/AdBlue quality sensor internal failure (Temperature sensor failure)Full repair manual for code 19169 (DTC 4C4E) - ECU, Engine Control Unit (ECU) / SCR Control Module
19170Engine Control Module (ECM) or SCR/DEF Dosing Control Unit (DCU)DEF/AdBlue Quality Sensor - Physical Range Check error for ConductivityFull repair manual for code 19170, Engine Control Module (ECM) or SCR/DEF Dosing Control Unit (DCU)
19171Engine Control Unit (ECU) or Dosing Control Unit (DCU)DEF/AdBlue Conductivity Error (Urea Conductivity Error)Full repair manual for code 19171, Engine Control Unit (ECU) or Dosing Control Unit (DCU)
19172DCU (Dosing Control Unit)Cooling control valve short circuit to ground | P20A2 Vent valve (Reductant Purge Control Valve) - short circuit lowFull repair manual for code 19172, DCU (Dosing Control Unit)
19173 (DTC 627A) - ECUEngine Control Unit (ECU / ENG)DEF/AdBlue dosing valve actuator short circuit in high side failureFull repair manual for code 19173 (DTC 627A) - ECU, Engine Control Unit (ECU / ENG)
19173Engine Control Unit (ECU) / Engine Aftertreatment Control ModuleDEF/AdBlue dosing valve actuator short circuit to battery in high side failureFull repair manual for code 19173, Engine Control Unit (ECU) / Engine Aftertreatment Control Module
19174 (DTC 467A) - ECUEngine Control Unit (ECU)DEF/AdBlue dosing valve actuator short circuit in high side failure.Full repair manual for code 19174 (DTC 467A) - ECU, Engine Control Unit (ECU)
19174SCR (Selective Catalytic Reduction) system / Engine ECUDEF/AdBlue dosing valve actuator short circuit in high side failureFull repair manual for code 19174, SCR (Selective Catalytic Reduction) system / Engine ECU
19175DCU (Dosing Control Unit) or Engine ECUDEF/AdBlue tank level sensor indicates too high fill level.Full repair manual for code 19175, DCU (Dosing Control Unit) or Engine ECU
19176Engine Control Module (ECM) or Aftertreatment Control Module (ACM) / Dosing Control Unit (DCU)DEF/AdBlue tank level sensor indicates too low fill levelFull repair manual for code 19176, Engine Control Module (ECM) or Aftertreatment Control Module (ACM) / Dosing Control Unit (DCU)
19177Engine ECU or NH3/NOx Sensor Control BoxNH3 sensor temperature invalid (too low or too high)Full repair manual for code 19177, Engine ECU or NH3/NOx Sensor Control Box