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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 4129–4152 of 6682

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P2443AIR System Switching Valve Stuck Closed Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2443 relates to air system switching valve stuck closed bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2444AIR System Pump Stuck On Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2444 relates to air system pump stuck on bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2445AIR System Pump Stuck Off Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2445 relates to air system pump stuck off bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2446AIR System Pump Stuck On Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2446 relates to air system pump stuck on bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2447AIR System Pump Stuck Off Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2447 relates to air system pump stuck off bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2448AIR System High Air Flow Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2448 relates to air system high air flow bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2449AIR System High Air Flow Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2449 relates to air system high air flow 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.P244FExhaust Temperature Too High For Particulate Filter Regeneration Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP244F relates to exhaust temperature too high for particulate filter regeneration bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2452Particulate Filter Pressure Sensor A CircuitCheck soonEmissions System30–120 minutes for initial diagnosisP2452 relates to particulate filter pressure sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2453Particulate Filter Pressure Sensor A Circuit Range/PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP2453 relates to particulate filter pressure sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2454Particulate Filter Pressure Sensor A Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP2454 relates to particulate filter pressure sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2455Particulate Filter Pressure Sensor A Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2455 relates to particulate filter pressure sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2456Particulate Filter Pressure Sensor A Circuit Intermittent/ErraticCheck soonEmissions System30–120 minutes for initial diagnosisP2456 relates to particulate filter pressure sensor a circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2457EGR Cooler A Efficiency Below ThresholdCheck soonEmissions System30–120 minutes for initial diagnosisP2457 relates to egr cooler a efficiency below threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2458Particulate Filter Regeneration Duration Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP2458 relates to particulate filter regeneration duration bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2459Particulate Filter Regeneration Frequency Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP2459 relates to particulate filter regeneration frequency bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P245AEGR Cooler Bypass Control Circuit/Open Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP245A relates to egr cooler bypass control circuit/open bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P245BEGR Cooler Bypass Control Circuit Range/Performance Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP245B relates to egr cooler bypass control circuit range/performance bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P245CEGR Cooler Bypass Control Circuit Low Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP245C relates to egr cooler bypass control circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.