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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 3121–3144 of 6682

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P202CReductant Tank Heater Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP202C relates to reductant tank heater control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P202DReductant LeakageCheck soonSensors & Electronics30–120 minutes for initial diagnosisP202D relates to reductant leakage. Check the fault conditions and vehicle-specific procedure before replacing parts.P202EReductant Injection Valve Circuit Range/Performance Bank 1 Unit 1Check soonFuel System30–120 minutes for initial diagnosisP202E relates to reductant injection valve circuit range/performance bank 1 unit 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P202FReductant/Regeneration Supply Control Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP202F relates to reductant/regeneration supply control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2030Fuel Fired Heater PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2030 relates to fuel fired heater performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2031Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 2Check soonEmissions System30–120 minutes for initial diagnosisP2031 relates to exhaust gas temperature sensor circuit bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2032Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 2Check soonEmissions System30–120 minutes for initial diagnosisP2032 relates to exhaust gas temperature sensor circuit low bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2033Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 2Check soonEmissions System30–120 minutes for initial diagnosisP2033 relates to exhaust gas temperature sensor circuit high bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2034Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2Check soonEmissions System30–120 minutes for initial diagnosisP2034 relates to exhaust gas temperature sensor circuit bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2035Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 2Check soonEmissions System30–120 minutes for initial diagnosisP2035 relates to exhaust gas temperature sensor circuit low bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2036Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 2Check soonEmissions System30–120 minutes for initial diagnosisP2036 relates to exhaust gas temperature sensor circuit high bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2037Reductant Injection Air Pressure Sensor A CircuitCheck soonFuel System30–120 minutes for initial diagnosisP2037 relates to reductant injection air pressure sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2038Reductant Injection Air Pressure Sensor A Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2038 relates to reductant injection air pressure sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2039Reductant Injection Air Pressure Sensor A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2039 relates to reductant injection air pressure sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P203AReductant Level Sensor A CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP203A relates to reductant level sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P203BReductant Level Sensor A Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP203B relates to reductant level sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P203CReductant Level Sensor A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP203C relates to reductant level sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P203DReductant Level Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP203D relates to reductant level sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P203EReductant Level Sensor A Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP203E relates to reductant level sensor a circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P203FReductant Level Too LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP203F relates to reductant level too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2040Reductant Injection Air Pressure Sensor A Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2040 relates to reductant injection air pressure sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2041Reductant Injection Air Pressure Sensor A Circuit IntermittentCheck soonFuel System30–120 minutes for initial diagnosisP2041 relates to reductant injection air pressure sensor a circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2042Reductant Temperature Sensor A CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2042 relates to reductant temperature sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2043Reductant Temperature Sensor A Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2043 relates to reductant temperature sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.