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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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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 1273–1296 of 7353

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P0594Cruise Control Servo Control Circuit/OpenLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0594 relates to cruise control servo control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P0595Cruise Control Servo Control Circuit LowLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0595 relates to cruise control servo control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0596Cruise Control Servo Control Circuit HighLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0596 relates to cruise control servo control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0597Thermostat Heater Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP0597 relates to thermostat heater control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P0598Thermostat Heater Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP0598 relates to thermostat heater control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0599Thermostat Heater Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP0599 relates to thermostat heater control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P059AActive Grille Air Shutter A Position Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059A relates to active grille air shutter a position sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P059BActive Grille Air Shutter A Position Sensor Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059B relates to active grille air shutter a position sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P059CActive Grille Air Shutter A Position Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059C relates to active grille air shutter a position sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P059DActive Grille Air Shutter A Position Sensor Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059D relates to active grille air shutter a position sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P059EActive Grille Air Shutter A Position Sensor Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059E relates to active grille air shutter a position sensor circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P059FActive Grille Air Shutter A Performance/Stuck OffCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059F relates to active grille air shutter a performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A0Active Grille Air Shutter A Stuck OnCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A0 relates to active grille air shutter a stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A1Active Grille Air Shutter A Position Sensor Minimum/Maximum Stop PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A1 relates to active grille air shutter a position sensor minimum/maximum stop performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A2Active Grille Air Shutter A Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A2 relates to active grille air shutter a control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A3Active Grille Air Shutter A Control Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A3 relates to active grille air shutter a control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A4Active Grille Air Shutter A Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A4 relates to active grille air shutter a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A5Active Grille Air Shutter A Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A5 relates to active grille air shutter a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A6Active Grille Air Shutter A Supply Voltage Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP05A6 relates to active grille air shutter a supply voltage circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A7Active Grille Air Shutter A Supply Voltage Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP05A7 relates to active grille air shutter a supply voltage circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A8Active Grille Air Shutter A Supply Voltage Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP05A8 relates to active grille air shutter a supply voltage circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A9Active Grille Air Shutter B Position Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A9 relates to active grille air shutter b position sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P05AAActive Grille Air Shutter B Position Sensor Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05AA relates to active grille air shutter b position sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P05ABActive Grille Air Shutter B Position Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05AB relates to active grille air shutter b position sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.