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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 4753–4776 of 8256

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P257EEngine Hood Switch Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP257E relates to engine hood switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P257FEngine Hood Switch Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP257F relates to engine hood switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2580Turbocharger/Supercharger Speed Sensor A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2580 relates to turbocharger/supercharger speed sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2581Turbocharger/Supercharger Speed Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2581 relates to turbocharger/supercharger speed sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2582Turbocharger/Supercharger Speed Sensor A Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2582 relates to turbocharger/supercharger speed sensor a circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2584Fuel Additive Control Module Requested MIL IlluminationCheck soonFuel System30–120 minutes for initial diagnosisP2584 relates to fuel additive control module requested mil illumination. Check the fault conditions and vehicle-specific procedure before replacing parts.P2585Fuel Additive Control Module Warning Lamp RequestCheck soonFuel System30–120 minutes for initial diagnosisP2585 relates to fuel additive control module warning lamp request. Check the fault conditions and vehicle-specific procedure before replacing parts.P2586Turbocharger Boost Control Position Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2586 relates to turbocharger boost control position sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2587Turbocharger Boost Control Position Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2587 relates to turbocharger boost control position sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2588Turbocharger Boost Control Position Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2588 relates to turbocharger boost control position sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2589Turbocharger Boost Control Position Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2589 relates to turbocharger boost control position sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P258AVacuum Pump Control Circuit A/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP258A relates to vacuum pump control circuit a/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P258BVacuum Pump Control Circuit A Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP258B relates to vacuum pump control circuit a range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P258CVacuum Pump Control Circuit A LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP258C relates to vacuum pump control circuit a low. Check the fault conditions and vehicle-specific procedure before replacing parts.P258DVacuum Pump Control Circuit A HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP258D relates to vacuum pump control circuit a high. Check the fault conditions and vehicle-specific procedure before replacing parts.P258EPTO Enable Switch PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP258E relates to pto enable switch performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P258FTorque Management Request Output SignalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP258F relates to torque management request output signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P2590Turbocharger Boost Control Position Sensor B Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2590 relates to turbocharger boost control position sensor b circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2593Turbocharger Speed Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2593 relates to turbocharger speed sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2594Turbocharger Speed Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2594 relates to turbocharger speed sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2595Turbocharger Speed Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2595 relates to turbocharger speed sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2596Turbocharger Speed Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2596 relates to turbocharger speed sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2597Turbocharger Speed Sensor B Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2597 relates to turbocharger speed sensor b circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2598Turbocharger Boost Control Position Sensor A Performance - Stuck LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2598 relates to turbocharger boost control position sensor a performance - stuck low. Check the fault conditions and vehicle-specific procedure before replacing parts.