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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 25–48 of 121

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P0136Oxygen Sensor Circuit Bank 1 Sensor 2Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0136 means Oxygen Sensor Circuit Bank 1 Sensor 2. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0140Oxygen Sensor Circuit No Activity Detected Bank 1 Sensor 2Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0140 means Oxygen Sensor Circuit No Activity Detected Bank 1 Sensor 2. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0150Oxygen Sensor Circuit Bank 2 Sensor 1Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0150 means Oxygen Sensor Circuit Bank 2 Sensor 1. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0525Cruise Control Servo Control Circuit Range/PerformanceLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0525 relates to cruise control servo control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0530A/C Refrigerant Pressure Sensor CircuitLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0530 indicates a fault related to a/c refrigerant pressure sensor circuit. Learn the likely causes and a practical diagnostic order before replacing parts.P0531A/C Refrigerant Pressure Sensor Range/PerformanceLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0531 indicates a fault related to a/c refrigerant pressure sensor range/performance. Learn the likely causes and a practical diagnostic order before replacing parts.P0532A/C Refrigerant Pressure Sensor Circuit LowLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0532 indicates a fault related to a/c refrigerant pressure sensor circuit low. Learn the likely causes and a practical diagnostic order before replacing parts.P0533A/C Refrigerant Pressure Sensor Circuit HighLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0533 indicates a fault related to a/c refrigerant pressure sensor circuit high. Learn the likely causes and a practical diagnostic order before replacing parts.P0534Air Conditioner Refrigerant Charge LossLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0534 indicates a fault related to air conditioner refrigerant charge loss. Learn the likely causes and a practical diagnostic order before replacing parts.P0564Cruise Control Multi-Function Input A CircuitLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0564 indicates a fault related to cruise control multi-function input a circuit. Learn the likely causes and a practical diagnostic order before replacing parts.P0565Cruise Control On Signal MalfunctionLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0565 indicates a fault related to cruise control on signal malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0566Cruise Control Off Signal MalfunctionLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0566 indicates a fault related to cruise control off signal malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0567Cruise Control Resume Signal MalfunctionLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0567 indicates a fault related to cruise control resume signal malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0568Cruise Control Set Signal MalfunctionLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0568 indicates a fault related to cruise control set signal malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0569Cruise Control Coast Signal MalfunctionLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0569 indicates a fault related to cruise control coast signal malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P056ACruise Control Increase Distance SignalLow prioritySensors & Electronics30–120 minutes for initial diagnosisP056A relates to cruise control increase distance signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P056BCruise Control Decrease Distance SignalLow prioritySensors & Electronics30–120 minutes for initial diagnosisP056B relates to cruise control decrease distance signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P056CCruise Control Cancel SignalLow prioritySensors & Electronics30–120 minutes for initial diagnosisP056C relates to cruise control cancel signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P0570Cruise Control Accel Signal MalfunctionLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0570 indicates a fault related to cruise control accel signal malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0574Cruise Control System - Vehicle Speed Too HighLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0574 relates to cruise control system - vehicle speed too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0575Cruise Control Input CircuitLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0575 relates to cruise control input circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0576Cruise Control Input Circuit LowLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0576 relates to cruise control input circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0577Cruise Control Input Circuit HighLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0577 relates to cruise control input circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0578Cruise Control Multi-Function Input A Circuit StuckLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0578 relates to cruise control multi-function input a circuit stuck. Check the fault conditions and vehicle-specific procedure before replacing parts.