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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 4681–4704 of 8256

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P2532Ignition Switch Run Position Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2532 relates to ignition switch run position circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2533Ignition Switch On/Start Position CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2533 relates to ignition switch on/start position circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2534Ignition Switch On/Start Position Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2534 relates to ignition switch on/start position circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2535Ignition Switch On/Start Position Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2535 relates to ignition switch on/start position circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2536Ignition Switch Accessory Position CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2536 relates to ignition switch accessory position circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2537Ignition Switch Accessory Position Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2537 relates to ignition switch accessory position circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2538Ignition Switch Accessory Position Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2538 relates to ignition switch accessory position circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2539Low Pressure Fuel System Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP2539 relates to low pressure fuel system sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P253APTO Sense Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP253A relates to pto sense circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P253BPTO Sense Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP253B relates to pto sense circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P253CPTO Sense Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP253C relates to pto sense circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P253DPTO Sense Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP253D relates to pto sense circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P253EPTO Sense Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP253E relates to pto sense circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P253FEngine Oil DeterioratedCheck soonSensors & Electronics30–120 minutes for initial diagnosisP253F relates to engine oil deteriorated. Check the fault conditions and vehicle-specific procedure before replacing parts.P2540Low Pressure Fuel System Sensor Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2540 relates to low pressure fuel system sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2541Low Pressure Fuel System Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2541 relates to low pressure fuel system sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2542Low Pressure Fuel System Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2542 relates to low pressure fuel system sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2543Low Pressure Fuel System Sensor Circuit IntermittentCheck soonFuel System30–120 minutes for initial diagnosisP2543 relates to low pressure fuel system sensor circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2544Torque Management Request Input Signal ACheck soonSensors & Electronics30–120 minutes for initial diagnosisP2544 relates to torque management request input signal a. Check the fault conditions and vehicle-specific procedure before replacing parts.P2545Torque Management Request Input Signal A Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2545 relates to torque management request input signal a range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2546Torque Management Request Input Signal A LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2546 relates to torque management request input signal a low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2547Torque Management Request Input Signal A HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2547 relates to torque management request input signal a high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2548Torque Management Request Input Signal BCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2548 relates to torque management request input signal b. Check the fault conditions and vehicle-specific procedure before replacing parts.P2549Torque Management Request Input Signal B Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2549 relates to torque management request input signal b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.