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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 265–288 of 515

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P2423HC Adsorption Catalyst Efficiency Below Threshold Bank 1Low priorityEmissions System30–120 minutes for initial diagnosisP2423 relates to hc adsorption catalyst efficiency below threshold bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2424HC Adsorption Catalyst Efficiency Below Threshold Bank 2Low priorityEmissions System30–120 minutes for initial diagnosisP2424 relates to hc adsorption catalyst efficiency below threshold bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2425EGR Cooling Valve Control Circuit/OpenCheck soonEmissions System30–120 minutes for initial diagnosisP2425 relates to egr cooling valve control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2426EGR Cooling Valve Control Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP2426 relates to egr cooling valve control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2427EGR Cooling Valve Control Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2427 relates to egr cooling valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2428Exhaust Gas Temperature Too High Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP2428 relates to exhaust gas temperature too high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2429Exhaust Gas Temperature Too High Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP2429 relates to exhaust gas temperature too high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P242AExhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3Check soonEmissions System30–120 minutes for initial diagnosisP242A relates to exhaust gas temperature sensor circuit bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P242BExhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3Check soonEmissions System30–120 minutes for initial diagnosisP242B relates to exhaust gas temperature sensor circuit range/performance bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P242CExhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3Check soonEmissions System30–120 minutes for initial diagnosisP242C relates to exhaust gas temperature sensor circuit low bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P242DExhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 3Check soonEmissions System30–120 minutes for initial diagnosisP242D relates to exhaust gas temperature sensor circuit high bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P242EExhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 3Check soonEmissions System30–120 minutes for initial diagnosisP242E relates to exhaust gas temperature sensor circuit intermittent/erratic bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P242FParticulate Filter Restriction - Ash Accumulation Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP242F relates to particulate filter restriction - ash accumulation bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P243AParticulate Filter Restriction - Ash Accumulation Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP243A relates to particulate filter restriction - ash accumulation bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P243BParticulate Filter Restriction - Forced Limited Power Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP243B relates to particulate filter restriction - forced limited power bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P243CParticulate Filter Regeneration Frequency Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP243C relates to particulate filter regeneration frequency bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P243DParticulate Filter Regeneration Duration Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP243D relates to particulate filter regeneration duration bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P243EParticulate Filter Regeneration Incomplete Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP243E relates to particulate filter regeneration incomplete bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P243FParticulate Filter Restriction - Soot Accumulation Too High Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP243F relates to particulate filter restriction - soot accumulation too high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P244AParticulate Filter Differential Pressure Too Low Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP244A relates to particulate filter differential pressure too low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P244BParticulate Filter Differential Pressure Too High Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP244B relates to particulate filter differential pressure too high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P244CExhaust Temperature Too Low For Particulate Filter Regeneration Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP244C relates to exhaust temperature too low for particulate filter regeneration bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P244DExhaust Temperature Too High For Particulate Filter Regeneration Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP244D relates to exhaust temperature too high for particulate filter regeneration bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P244EExhaust Temperature Too Low For Particulate Filter Regeneration Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP244E relates to exhaust temperature too low for particulate filter regeneration bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.