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9,253 diagnostic guides

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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 1570

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P0A8814 Volt Power Module Current Sensor A Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A88 concerns 14 volt power module current sensor a circuit low. Learn what this fault indicates and where to begin diagnosis.P0A8914 Volt Power Module Current Sensor A Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A89 concerns 14 volt power module current sensor a circuit high. Learn what this fault indicates and where to begin diagnosis.P0A8A14 Volt Power Module Current Sensor A Circuit IntermittentCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A8A concerns 14 volt power module current sensor a circuit intermittent. Learn what this fault indicates and where to begin diagnosis.P0A8B14 Volt Power Module System VoltageCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A8B concerns 14 volt power module system voltage. Learn what this fault indicates and where to begin diagnosis.P0A8C14 Volt Power Module System Voltage UnstableCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A8C concerns 14 volt power module system voltage unstable. Learn what this fault indicates and where to begin diagnosis.P0A8D14 Volt Power Module System Voltage LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A8D concerns 14 volt power module system voltage low. Learn what this fault indicates and where to begin diagnosis.P0A8E14 Volt Power Module System Voltage HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A8E concerns 14 volt power module system voltage high. Learn what this fault indicates and where to begin diagnosis.P0A8F14 Volt Power Module System PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A8F concerns 14 volt power module system performance. Learn what this fault indicates and where to begin diagnosis.P0A90Drive Motor A PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A90 concerns drive motor a performance. Learn what this fault indicates and where to begin diagnosis.P0A91Drive Motor B PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A91 concerns drive motor b performance. Learn what this fault indicates and where to begin diagnosis.P0A92Hybrid Generator PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A92 concerns hybrid generator performance. Learn what this fault indicates and where to begin diagnosis.P0A93Inverter A Cooling System PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A93 concerns inverter a cooling system performance. Learn what this fault indicates and where to begin diagnosis.P0A94DC/DC Converter A PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A94 concerns dc/dc converter a performance. Learn what this fault indicates and where to begin diagnosis.P0A9BHybrid/EV Battery Temperature Sensor A CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A9B concerns hybrid/ev battery temperature sensor a circuit. Learn what this fault indicates and where to begin diagnosis.P0A9CHybrid/EV Battery Temperature Sensor A Circuit Range/PerformanceCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A9C concerns hybrid/ev battery temperature sensor a circuit range/performance. Learn what this fault indicates and where to begin diagnosis.P0A9DHybrid/EV Battery Temperature Sensor A Circuit LowCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A9D concerns hybrid/ev battery temperature sensor a circuit low. Learn what this fault indicates and where to begin diagnosis.P0A9EHybrid/EV Battery Temperature Sensor A Circuit HighCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A9E concerns hybrid/ev battery temperature sensor a circuit high. Learn what this fault indicates and where to begin diagnosis.P0A9FHybrid/EV Battery Temperature Sensor A Circuit Intermittent/ErraticCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0A9F concerns hybrid/ev battery temperature sensor a circuit intermittent/erratic. Learn what this fault indicates and where to begin diagnosis.P0AA0Hybrid/EV Battery Positive Contactor CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA0 concerns hybrid/ev battery positive contactor circuit. Learn what this fault indicates and where to begin diagnosis.P0AA1Hybrid/EV Battery Positive Contactor Circuit Stuck ClosedCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA1 concerns hybrid/ev battery positive contactor circuit stuck closed. Learn what this fault indicates and where to begin diagnosis.P0AA2Hybrid/EV Battery Positive Contactor Circuit Stuck OpenCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA2 concerns hybrid/ev battery positive contactor circuit stuck open. Learn what this fault indicates and where to begin diagnosis.P0AA3Hybrid/EV Battery Negative Contactor CircuitCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA3 concerns hybrid/ev battery negative contactor circuit. Learn what this fault indicates and where to begin diagnosis.P0AA4Hybrid/EV Battery Negative Contactor Circuit Stuck ClosedCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA4 concerns hybrid/ev battery negative contactor circuit stuck closed. Learn what this fault indicates and where to begin diagnosis.P0AA5Hybrid/EV Battery Negative Contactor Circuit Stuck OpenCheck soonElectrical & Charging System45–120 minutes for initial diagnosisP0AA5 concerns hybrid/ev battery negative contactor circuit stuck open. Learn what this fault indicates and where to begin diagnosis.