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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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Diagnostic codes

Showing 4921–4944 of 7353

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P2574Direct Ozone Reduction Catalyst Deterioration Sensor Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP2574 relates to direct ozone reduction catalyst deterioration sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2575Direct Ozone Reduction Catalyst Deterioration Sensor Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2575 relates to direct ozone reduction catalyst deterioration sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2576Direct Ozone Reduction Catalyst Deterioration Sensor Circuit Intermittent/ErraticCheck soonEmissions System30–120 minutes for initial diagnosisP2576 relates to direct ozone reduction catalyst deterioration sensor circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2577Direct Ozone Reduction Catalyst Efficiency Below ThresholdLow priorityEmissions System30–120 minutes for initial diagnosisP2577 relates to direct ozone reduction catalyst efficiency below threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2578Turbocharger/Supercharger Speed Sensor A CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2578 relates to turbocharger/supercharger speed sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2579Turbocharger/Supercharger Speed Sensor A Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2579 relates to turbocharger/supercharger speed sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P257AVacuum Reservoir Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP257A relates to vacuum reservoir control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P257BVacuum Reservoir Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP257B relates to vacuum reservoir control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P257CVacuum Reservoir Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP257C relates to vacuum reservoir control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P257DEngine Hood Switch Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP257D relates to engine hood switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.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.P2583Cruise Control Front Distance Range Sensor Single Sensor or CenterLow prioritySensors & Electronics30–120 minutes for initial diagnosisP2583 relates to cruise control front distance range sensor single sensor or center. 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.