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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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Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

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 5833–5856 of 9253

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P267AB Rocker Arm Actuator Position Sensor Circuit Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP267A relates to b rocker arm actuator position sensor circuit bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P267BB Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP267B relates to b rocker arm actuator position sensor circuit range/performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P267CB Rocker Arm Actuator Position Sensor Circuit Low Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP267C relates to b rocker arm actuator position sensor circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P267DB Rocker Arm Actuator Position Sensor Circuit High Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP267D relates to b rocker arm actuator position sensor circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P267EB Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP267E relates to b rocker arm actuator position sensor circuit intermittent/erratic bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P267FControl Module Internal Temperature Sensor A Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP267F relates to control module internal temperature sensor a circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2680Coolant Degassing Valve Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2680 relates to coolant degassing valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2681Engine Coolant Bypass Valve A Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP2681 relates to engine coolant bypass valve a control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2682Engine Coolant Bypass Valve A Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2682 relates to engine coolant bypass valve a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2683Engine Coolant Bypass Valve A Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2683 relates to engine coolant bypass valve a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2684Actuator Supply Voltage C Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2684 relates to actuator supply voltage c circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2685Actuator Supply Voltage C Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2685 relates to actuator supply voltage c circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2686Actuator Supply Voltage C Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2686 relates to actuator supply voltage c circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2687Fuel Supply Heater Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP2687 relates to fuel supply heater control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2688Fuel Supply Heater Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2688 relates to fuel supply heater control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2689Fuel Supply Heater Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2689 relates to fuel supply heater control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P268AFuel Injector Calibration Not Learned/ProgrammedCheck soonFuel System30–120 minutes for initial diagnosisP268A relates to fuel injector calibration not learned/programmed. Check the fault conditions and vehicle-specific procedure before replacing parts.P268BHigh Pressure Fuel Pump Calibration Not Learned/ProgrammedCheck soonFuel System30–120 minutes for initial diagnosisP268B relates to high pressure fuel pump calibration not learned/programmed. Check the fault conditions and vehicle-specific procedure before replacing parts.P268CCylinder 1 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP268C relates to cylinder 1 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P268DCylinder 2 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP268D relates to cylinder 2 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P268ECylinder 3 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP268E relates to cylinder 3 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P268FCylinder 4 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP268F relates to cylinder 4 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P2690Cylinder 5 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP2690 relates to cylinder 5 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P2691Cylinder 6 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP2691 relates to cylinder 6 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.