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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.

Emissions System 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 145–168 of 515

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P04F7Catalyst Heater Circuit High Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP04F7 relates to catalyst heater circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P04F8Catalyst Heater Circuit Intermittent Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP04F8 relates to catalyst heater circuit intermittent bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P04F9Catalyst Heater Circuit Intermittent Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP04F9 relates to catalyst heater circuit intermittent bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P04FAEGR A Control Temperature Too HighCheck soonEmissions System30–120 minutes for initial diagnosisP04FA relates to egr a control temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P04FDEGR Actuator A Control Processor PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP04FD relates to egr actuator a control processor performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P04FECatalyst Heater Circuit Performance Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP04FE relates to catalyst heater circuit performance bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P04FFCatalyst Heater Circuit Performance Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP04FF relates to catalyst heater circuit performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P0535A/C Evaporator Temperature Sensor CircuitLow priorityEmissions System30–120 minutes for initial diagnosisP0535 relates to a/c evaporator temperature sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0536A/C Evaporator Temperature Sensor Circuit Range/PerformanceLow priorityEmissions System30–120 minutes for initial diagnosisP0536 relates to a/c evaporator temperature sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0537A/C Evaporator Temperature Sensor Circuit LowLow priorityEmissions System30–120 minutes for initial diagnosisP0537 relates to a/c evaporator temperature sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0538A/C Evaporator Temperature Sensor Circuit HighLow priorityEmissions System30–120 minutes for initial diagnosisP0538 relates to a/c evaporator temperature sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0539A/C Evaporator Temperature Sensor Circuit IntermittentLow priorityEmissions System30–120 minutes for initial diagnosisP0539 relates to a/c evaporator temperature sensor circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0544Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 1Check soonEmissions System30–120 minutes for initial diagnosisP0544 indicates a fault related to exhaust gas temperature sensor circuit bank 1 sensor 1. Learn the likely causes and a practical diagnostic order before replacing parts.P0545Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 1Check soonEmissions System30–120 minutes for initial diagnosisP0545 relates to exhaust gas temperature sensor circuit low bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P0546Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 1Check soonEmissions System30–120 minutes for initial diagnosisP0546 relates to exhaust gas temperature sensor circuit high bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P0547Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1Check soonEmissions System30–120 minutes for initial diagnosisP0547 relates to exhaust gas temperature sensor circuit bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P0548Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1Check soonEmissions System30–120 minutes for initial diagnosisP0548 relates to exhaust gas temperature sensor circuit low bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P0549Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 1Check soonEmissions System30–120 minutes for initial diagnosisP0549 relates to exhaust gas temperature sensor circuit high bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P055EOxygen Sensor Control Module System VoltageCheck soonEmissions System30–120 minutes for initial diagnosisP055E relates to oxygen sensor control module system voltage. Check the fault conditions and vehicle-specific procedure before replacing parts.P05EBCold Start SCR NOx Catalyst Inlet Temperature Too LowCheck soonEmissions System30–120 minutes for initial diagnosisP05EB relates to cold start scr nox catalyst inlet temperature too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2002Particulate Filter Efficiency Below Threshold Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP2002 relates to particulate filter efficiency below threshold bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2003Particulate Filter Efficiency Below Threshold Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP2003 relates to particulate filter efficiency below threshold bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P200CParticulate Filter Over Temperature Bank 1UrgentEmissions System30–120 minutes for initial diagnosisP200C relates to particulate filter over temperature bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P200DParticulate Filter Over Temperature Bank 2UrgentEmissions System30–120 minutes for initial diagnosisP200D relates to particulate filter over temperature bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.