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9,253 diagnostic guides

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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.

Check soon P · Powertrain Clear all

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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

Showing 1321–1344 of 6682

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P06A4Sensor Reference Voltage D Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06A4 relates to sensor reference voltage d circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P06A5Sensor Reference Voltage D Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06A5 relates to sensor reference voltage d circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06A6Sensor Reference Voltage A Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06A6 relates to sensor reference voltage a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06A7Sensor Reference Voltage B Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06A7 relates to sensor reference voltage b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06A8Sensor Reference Voltage C Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06A8 relates to sensor reference voltage c circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06A9Sensor Reference Voltage D Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06A9 relates to sensor reference voltage d circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06AAControl Module Internal Temperature B Too HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06AA relates to control module internal temperature b too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06ABControl Module Internal Temperature Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06AB relates to control module internal temperature sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P06ACControl Module Internal Temperature Sensor B Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06AC relates to control module internal temperature sensor b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06ADControl Module Internal Temperature Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06AD relates to control module internal temperature sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P06AEControl Module Internal Temperature Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06AE relates to control module internal temperature sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06AFTorque Management System - Forced Engine ShutdownCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06AF relates to torque management system - forced engine shutdown. Check the fault conditions and vehicle-specific procedure before replacing parts.P06B0Sensor Power Supply A Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06B0 relates to sensor power supply a circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P06B1Sensor Power Supply A Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06B1 relates to sensor power supply a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P06B2Sensor Power Supply A Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06B2 relates to sensor power supply a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06B3Sensor Power Supply B Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06B3 relates to sensor power supply b circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P06B4Sensor Power Supply B Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06B4 relates to sensor power supply b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P06B5Sensor Power Supply B Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP06B5 relates to sensor power supply b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06B6Internal Control Module Knock/Combustion Vibration Sensor Processor 1 PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06B6 relates to internal control module knock/combustion vibration sensor processor 1 performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06B7Internal Control Module Knock/Combustion Vibration Sensor Processor 2 PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06B7 relates to internal control module knock/combustion vibration sensor processor 2 performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06B8Internal Control Module Non-Volatile Random Access Memory (NVRAM) ErrorCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06B8 relates to internal control module non-volatile random access memory (nvram) error. Check the fault conditions and vehicle-specific procedure before replacing parts.P06B9Cylinder 1 Glow Plug Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP06B9 relates to cylinder 1 glow plug circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06BACylinder 2 Glow Plug Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP06BA relates to cylinder 2 glow plug circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06BBCylinder 3 Glow Plug Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP06BB relates to cylinder 3 glow plug circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.