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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.

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

Diagnostic codes

Showing 625–648 of 2110

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P06F3Reductant Control Module Internal Temperature Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06F3 relates to reductant control module internal temperature sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06F4Stop-Start Mode Lamp Control CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06F4 relates to stop-start mode lamp control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P06F5Glow Plug Control Module 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP06F5 relates to glow plug control module 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P06F6Glow Plug Control Module 2 Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06F6 relates to glow plug control module 2 control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P06F7Glow Plug Control Module 2 Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06F7 relates to glow plug control module 2 control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P06F8Glow Plug Control Module 2 Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06F8 relates to glow plug control module 2 control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P06FAGlow Plug Control Module 2 PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06FA relates to glow plug control module 2 performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06FBGlow Plug Control Module 2 Memory Checksum ErrorCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06FB relates to glow plug control module 2 memory checksum error. Check the fault conditions and vehicle-specific procedure before replacing parts.P06FCGlow Plug Control Module 2 to PCM Communication CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06FC relates to glow plug control module 2 to pcm communication circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P06FDGlow Plug Control Module 2 to PCM Communication Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06FD relates to glow plug control module 2 to pcm communication circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06FECold Start Diesel Intake Air Flow Control PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06FE relates to cold start diesel intake air flow control performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P06FFEconomy Mode Lamp Control CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP06FF relates to economy mode lamp control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0703Brake Switch B CircuitUrgentSensors & Electronics30–120 minutes for initial diagnosisP0703 relates to brake switch b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0716Input/Turbine Shaft Speed Sensor A Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0716 relates to input/turbine shaft speed sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0717Input/Turbine Shaft Speed Sensor A Circuit No SignalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0717 relates to input/turbine shaft speed sensor a circuit no signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P0718Input/Turbine Shaft Speed Sensor A Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0718 relates to input/turbine shaft speed sensor a circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0719Brake Switch B Circuit LowUrgentSensors & Electronics30–120 minutes for initial diagnosisP0719 relates to brake switch b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0724Brake Switch B Circuit HighCheck soonSensors & Electronics30–90 minutes for initial diagnosisP0724 indicates the brake-switch B input remains high or exceeds the expected electrical range. Learn what to inspect before replacing parts.P0729Gear 6 Incorrect RatioCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0729 relates to gear 6 incorrect ratio. Check the fault conditions and vehicle-specific procedure before replacing parts.P072AStuck in NeutralCheck soonSensors & Electronics30–120 minutes for initial diagnosisP072A relates to stuck in neutral. Check the fault conditions and vehicle-specific procedure before replacing parts.P072BStuck In ReverseCheck soonSensors & Electronics30–120 minutes for initial diagnosisP072B relates to stuck in reverse. Check the fault conditions and vehicle-specific procedure before replacing parts.P072CStuck in Gear 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP072C relates to stuck in gear 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P072DStuck in Gear 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP072D relates to stuck in gear 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P072EStuck in Gear 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP072E relates to stuck in gear 3. Check the fault conditions and vehicle-specific procedure before replacing parts.