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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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Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

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 4489–4512 of 9253

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P2139Throttle/Pedal Position Sensor/Switch D/F Voltage CorrelationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2139 relates to throttle/pedal position sensor/switch d/f voltage correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P213AEGR Throttle Control Circuit B /OpenCheck soonEmissions System30–120 minutes for initial diagnosisP213A relates to egr throttle control circuit b /open. Check the fault conditions and vehicle-specific procedure before replacing parts.P213BEGR Throttle Control Circuit B Range/PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP213B relates to egr throttle control circuit b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P213CEGR Throttle Control Circuit B LowCheck soonEmissions System30–120 minutes for initial diagnosisP213C relates to egr throttle control circuit b low. Check the fault conditions and vehicle-specific procedure before replacing parts.P213DEGR Throttle Control Circuit B HighCheck soonEmissions System30–120 minutes for initial diagnosisP213D relates to egr throttle control circuit b high. Check the fault conditions and vehicle-specific procedure before replacing parts.P213EFuel Injection System Fault - Forced Engine ShutdownCheck soonFuel System30–120 minutes for initial diagnosisP213E relates to fuel injection system fault - forced engine shutdown. Check the fault conditions and vehicle-specific procedure before replacing parts.P213FFuel Pump System Fault - Forced Engine ShutdownCheck soonFuel System30–120 minutes for initial diagnosisP213F relates to fuel pump system fault - forced engine shutdown. Check the fault conditions and vehicle-specific procedure before replacing parts.P2140Throttle/Pedal Position Sensor/Switch E/F Voltage CorrelationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2140 relates to throttle/pedal position sensor/switch e/f voltage correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2141EGR Throttle Control Circuit A LowCheck soonEmissions System30–120 minutes for initial diagnosisP2141 relates to egr throttle control circuit a low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2142EGR Throttle Control Circuit A HighCheck soonEmissions System30–120 minutes for initial diagnosisP2142 relates to egr throttle control circuit a high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2143EGR Vent Control Circuit/OpenCheck soonEmissions System30–120 minutes for initial diagnosisP2143 relates to egr vent control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2144EGR Vent Control Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP2144 relates to egr vent control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2145EGR Vent Control Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2145 relates to egr vent control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2146Fuel Injector Group A Supply Voltage Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP2146 relates to fuel injector group a supply voltage circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2147Fuel Injector Group A Supply Voltage Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2147 relates to fuel injector group a supply voltage circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2148Fuel Injector Group A Supply Voltage Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2148 relates to fuel injector group a supply voltage circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2149Fuel Injector Group B Supply Voltage Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP2149 relates to fuel injector group b supply voltage circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P214ASCR NOx Catalyst Inlet Temperature Too HighCheck soonEmissions System30–120 minutes for initial diagnosisP214A relates to scr nox catalyst inlet temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P214BSCR NOx Catalyst Inlet Temperature Too High During Particulate Filter RegenerationCheck soonEmissions System30–120 minutes for initial diagnosisP214B relates to scr nox catalyst inlet temperature too high during particulate filter regeneration. Check the fault conditions and vehicle-specific procedure before replacing parts.P214CSCR NOx Catalyst Outlet Temperature Too HighCheck soonEmissions System30–120 minutes for initial diagnosisP214C relates to scr nox catalyst outlet temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P214DSCR NOx Catalyst Outlet Temperature Too High During Particulate Filter RegenerationCheck soonEmissions System30–120 minutes for initial diagnosisP214D relates to scr nox catalyst outlet temperature too high during particulate filter regeneration. Check the fault conditions and vehicle-specific procedure before replacing parts.P214EReductant Pump A Current Too HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP214E relates to reductant pump a current too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P214FReductant Heater A Current Too HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP214F relates to reductant heater a current too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2150Fuel Injector Group B Supply Voltage Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2150 relates to fuel injector group b supply voltage circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.