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9,253 diagnostic guides

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Find codes by symptomChoose what you notice to search matching code guides.

Rough idle or shakingVibration while stopped Hard to startLong cranking or no-start Engine stallsCuts out at idle or on the road Hesitates or loses powerSlow response when accelerating Battery light is onCharging system warning Harsh gear changesDelayed or rough shifting

A symptom can have several causes. Treat matching codes as clues and follow the diagnostic checks in each guide.

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Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

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All severities9253 Low priority305 Check soon8256 Urgent621

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All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 457–480 of 1939

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P0614ECM/TCM IncompatibleCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0614 relates to ecm/tcm incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P061AInternal Control Module Torque PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP061A relates to internal control module torque performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P061BInternal Control Module Torque Calculation PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP061B relates to internal control module torque calculation performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P061CInternal Control Module Engine RPM PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP061C relates to internal control module engine rpm performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P061DInternal Control Module Engine Air Mass PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP061D relates to internal control module engine air mass performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P061EInternal Control Module Brake Signal PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP061E relates to internal control module brake signal performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P061FInternal Control Module Throttle Actuator Controller PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP061F relates to internal control module throttle actuator controller performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P062CInternal Control Module Vehicle Speed PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP062C relates to internal control module vehicle speed performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P062FInternal Control Module EEPROM ErrorCheck soonSensors & Electronics30–120 minutes for initial diagnosisP062F relates to internal control module eeprom error. Check the fault conditions and vehicle-specific procedure before replacing parts.P0630VIN Not Programmed or Incompatible - ECM/PCMCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0630 relates to vin not programmed or incompatible - ecm/pcm. Check the fault conditions and vehicle-specific procedure before replacing parts.P0631VIN Not Programmed or Incompatible - TCMCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0631 relates to vin not programmed or incompatible - tcm. Check the fault conditions and vehicle-specific procedure before replacing parts.P0632Odometer Not Programmed - ECM/PCMCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0632 relates to odometer not programmed - ecm/pcm. Check the fault conditions and vehicle-specific procedure before replacing parts.P0633Immobilizer Key Not Programmed - ECM/PCMCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0633 relates to immobilizer key not programmed - ecm/pcm. Check the fault conditions and vehicle-specific procedure before replacing parts.P0634Control Module Internal Temperature A Too HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0634 relates to control module internal temperature a too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0638Throttle Actuator Control Range/Performance Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP0638 relates to throttle actuator control range/performance bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P0639Throttle Actuator Control Range/Performance Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP0639 relates to throttle actuator control range/performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P063EAuto Configuration Throttle Input Not Present Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP063E relates to auto configuration throttle input not present bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P0640Intake Air Heater Control CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0640 relates to intake air heater control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0644Driver Display Serial Communication CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0644 relates to driver display serial communication circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0648Immobilizer Lamp Control CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0648 relates to immobilizer lamp control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0649Speed Control Lamp Control CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0649 relates to speed control lamp control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P064BPTO Control ModuleCheck soonSensors & Electronics30–120 minutes for initial diagnosisP064B relates to pto control module. Check the fault conditions and vehicle-specific procedure before replacing parts.P064CGlow Plug Control Module 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP064C relates to glow plug control module 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P064DInternal Control Module O2 Sensor Processor Performance Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP064D relates to internal control module o2 sensor processor performance bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.