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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.

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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 841–864 of 2110

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P2020Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2020 relates to intake manifold runner position sensor/switch circuit range/performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2021Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2021 relates to intake manifold runner position sensor/switch circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2022Intake Manifold Runner Position Sensor/Switch Circuit High Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2022 relates to intake manifold runner position sensor/switch circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2023Intake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2023 relates to intake manifold runner position sensor/switch circuit intermittent bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P202AReductant Tank Heater Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP202A relates to reductant tank heater control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P202BReductant Tank Heater Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP202B relates to reductant tank heater control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.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.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.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.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.P2044Reductant Temperature Sensor A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2044 relates to reductant temperature sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2045Reductant Temperature Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2045 relates to reductant temperature sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2046Reductant Temperature Sensor A Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2046 relates to reductant temperature sensor a circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P204AReductant Pressure Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP204A relates to reductant pressure sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P204BReductant Pressure Sensor Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP204B relates to reductant pressure sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P204CReductant Pressure Sensor Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP204C relates to reductant pressure sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P204DReductant Pressure Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP204D relates to reductant pressure sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.