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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 241–264 of 1049

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P03EEA Camshaft Profile Actuator C Control Circuit High Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03EE relates to a camshaft profile actuator c control circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03EFA Camshaft Profile Actuator C Control Performance/Stuck Off Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03EF relates to a camshaft profile actuator c control performance/stuck off bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03F0A Camshaft Profile Actuator C Control Stuck On Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03F0 relates to a camshaft profile actuator c control stuck on bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03F1B Camshaft Profile Actuator C Control Circuit/Open Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03F1 relates to b camshaft profile actuator c control circuit/open bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03F2B Camshaft Profile Actuator C Control Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03F2 relates to b camshaft profile actuator c control circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03F3B Camshaft Profile Actuator C Control Circuit High Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03F3 relates to b camshaft profile actuator c control circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03F4B Camshaft Profile Actuator C Control Performance/Stuck Off Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03F4 relates to b camshaft profile actuator c control performance/stuck off bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03F5B Camshaft Profile Actuator C Control Stuck On Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03F5 relates to b camshaft profile actuator c control stuck on bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03F6B Camshaft Position Actuator Position Sensor C Circuit Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03F6 relates to b camshaft position actuator position sensor c circuit bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03F7B Camshaft Position Actuator Position Sensor C Range/Performance Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03F7 relates to b camshaft position actuator position sensor c range/performance bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03F8B Camshaft Position Actuator Position Sensor C Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03F8 relates to b camshaft position actuator position sensor c circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03F9B Camshaft Position Actuator Position Sensor C Circuit High Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03F9 relates to b camshaft position actuator position sensor c circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P0480Cooling Fan 1 Control Circuit MalfunctionUrgentEngine Problems30–120 minutes for initial diagnosisP0480 indicates a fault related to cooling fan 1 control circuit malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0481Cooling Fan 2 Control Circuit MalfunctionUrgentEngine Problems30–120 minutes for initial diagnosisP0481 indicates a fault related to cooling fan 2 control circuit malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0482Cooling Fan 3 Control Circuit MalfunctionUrgentEngine Problems30–120 minutes for initial diagnosisP0482 indicates a fault related to cooling fan 3 control circuit malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0483Cooling Fan Rationality Check MalfunctionUrgentEngine Problems30–120 minutes for initial diagnosisP0483 indicates a fault related to cooling fan rationality check malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0484Cooling Fan Circuit Over CurrentUrgentEngine Problems30–120 minutes for initial diagnosisP0484 indicates a fault related to cooling fan circuit over current. Learn the likely causes and a practical diagnostic order before replacing parts.P0485Cooling Fan Power/Ground Circuit MalfunctionUrgentEngine Problems30–120 minutes for initial diagnosisP0485 indicates a fault related to cooling fan power/ground circuit malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0493Fan OverspeedUrgentEngine Problems30–120 minutes for initial diagnosisP0493 relates to fan overspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P0494Fan 1 UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP0494 relates to fan 1 underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P0495Fan 1 OverspeedUrgentEngine Problems30–120 minutes for initial diagnosisP0495 relates to fan 1 overspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P0505Idle Air Control System MalfunctionEngine ProblemsDiagnose P0505 idle control code. Learn about the IAC valve and how to fix idle speed problems.P0506Idle Control System RPM Lower Than ExpectedCheck soonEngine Problems30–120 minutes for initial diagnosisP0506 indicates a fault related to idle control system rpm lower than expected. Learn the likely causes and a practical diagnostic order before replacing parts.P0507Idle Control System RPM Higher Than ExpectedEngine ProblemsFix P0507 high idle code. Learn why your engine idle speed is too high and how to correct it.