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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

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P03E7A Camshaft Position Actuator Position Sensor C Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03E7 relates to a camshaft position actuator position sensor c circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03E8A Camshaft Position Actuator Position Sensor C Circuit High Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03E8 relates to a camshaft position actuator position sensor c circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03E9A Camshaft Profile Actuator Position Sensor A Exceeded Learning LimitCheck soonEngine Problems30–120 minutes for initial diagnosisP03E9 relates to a camshaft profile actuator position sensor a exceeded learning limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P03EAA Camshaft Profile Actuator Position Sensor B Exceeded Learning LimitCheck soonEngine Problems30–120 minutes for initial diagnosisP03EA relates to a camshaft profile actuator position sensor b exceeded learning limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P03EBA Camshaft Profile Actuator Position Sensor C Exceeded Learning LimitCheck soonEngine Problems30–120 minutes for initial diagnosisP03EB relates to a camshaft profile actuator position sensor c exceeded learning limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P03ECA Camshaft Profile Actuator C Control Circuit/Open Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03EC relates to a camshaft profile actuator c control circuit/open bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P03EDA Camshaft Profile Actuator C Control Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP03ED relates to a camshaft profile actuator c control circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.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.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.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.P0508Idle Air Control System Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP0508 indicates a fault related to idle air control system circuit low. Learn the likely causes and a practical diagnostic order before replacing parts.P0509Idle Air Control System Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP0509 indicates a fault related to idle air control system circuit high. Learn the likely causes and a practical diagnostic order before replacing parts.P050BCold Start Ignition Timing PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP050B relates to cold start ignition timing performance. Check the fault conditions and vehicle-specific procedure before replacing parts.