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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.

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 families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

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Diagnostic codes

Showing 1081–1104 of 2110

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P221DReductant Heater B Current Too HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP221D relates to reductant heater b current too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P221EReductant Heater C Current Too LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP221E relates to reductant heater c current too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P221FReductant Heater C Current Too HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP221F relates to reductant heater c current too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2220NOx Sensor Heater Control Circuit High Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2220 relates to nox sensor heater control circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2221NOx Sensor Heater Sense Circuit Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2221 relates to nox sensor heater sense circuit bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2222NOx Sensor Heater Sense Circuit Range/Performance Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2222 relates to nox sensor heater sense circuit range/performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2223NOx Sensor Heater Sense Circuit Low Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2223 relates to nox sensor heater sense circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2224NOx Sensor Heater Sense Circuit High Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2224 relates to nox sensor heater sense circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2225NOx Sensor Heater Sense Circuit Intermittent Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2225 relates to nox sensor heater sense circuit intermittent bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2226Barometric Pressure Sensor A CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2226 relates to barometric pressure sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2227Barometric Pressure Sensor A Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2227 relates to barometric pressure sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2228Barometric Pressure Sensor A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2228 relates to barometric pressure sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2229Barometric Pressure Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2229 relates to barometric pressure sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P222ABarometric Pressure Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP222A relates to barometric pressure sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P222BBarometric Pressure Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP222B relates to barometric pressure sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P222CBarometric Pressure Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP222C relates to barometric pressure sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P222DBarometric Pressure Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP222D relates to barometric pressure sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P222EBarometric Pressure Sensor B Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP222E relates to barometric pressure sensor b circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P222FBarometric Pressure Sensor A/B CorrelationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP222F relates to barometric pressure sensor a/b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2230Barometric Pressure Sensor A Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2230 relates to barometric pressure sensor a circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2231O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2231 relates to o2 sensor signal circuit shorted to heater circuit bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2232O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2232 relates to o2 sensor signal circuit shorted to heater circuit bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2233O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP2233 relates to o2 sensor signal circuit shorted to heater circuit bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P2234O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2234 relates to o2 sensor signal circuit shorted to heater circuit bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.