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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 4561–4584 of 7353

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P240CEVAP System Leak Detection Pump Heater Control Circuit HighLow priorityEmissions System30–120 minutes for initial diagnosisP240C relates to evap system leak detection pump heater control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P240DAlternative Fuel Low Pressure System LeakCheck soonFuel System30–120 minutes for initial diagnosisP240D relates to alternative fuel low pressure system leak. Check the fault conditions and vehicle-specific procedure before replacing parts.P240EAlternative Fuel High Pressure System LeakCheck soonFuel System30–120 minutes for initial diagnosisP240E relates to alternative fuel high pressure system leak. Check the fault conditions and vehicle-specific procedure before replacing parts.P240FEGR Slow ResponseCheck soonEmissions System30–120 minutes for initial diagnosisP240F relates to egr slow response. Check the fault conditions and vehicle-specific procedure before replacing parts.P2410Fuel Cap Sensor/Switch Circuit LowLow priorityFuel System30–120 minutes for initial diagnosisP2410 relates to fuel cap sensor/switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2411Fuel Cap Sensor/Switch Circuit HighLow priorityFuel System30–120 minutes for initial diagnosisP2411 relates to fuel cap sensor/switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2412Fuel Cap Sensor/Switch Circuit Intermittent/ErraticLow priorityFuel System30–120 minutes for initial diagnosisP2412 relates to fuel cap sensor/switch circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2413EGR System PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP2413 relates to egr system performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2414O2 Sensor Exhaust Sample Error Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2414 relates to o2 sensor exhaust sample error bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2415O2 Sensor Exhaust Sample Error Bank 2 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2415 relates to o2 sensor exhaust sample error bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2416O2 Sensor Signals Swapped Bank 1 Sensor 2/Bank 1 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP2416 relates to o2 sensor signals swapped bank 1 sensor 2/bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P2417O2 Sensor Signals Swapped Bank 2 Sensor 2/Bank 2 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP2417 relates to o2 sensor signals swapped bank 2 sensor 2/bank 2 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P2418EVAP System Switching Valve Control Circuit/OpenLow priorityEmissions System30–120 minutes for initial diagnosisP2418 relates to evap system switching valve control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2419EVAP System Switching Valve Control Circuit LowLow priorityEmissions System30–120 minutes for initial diagnosisP2419 relates to evap system switching valve control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P241AO2 Sensor Signals Swapped Bank 1 Sensor 1/Bank 1 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP241A relates to o2 sensor signals swapped bank 1 sensor 1/bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P241BO2 Sensor Signals Swapped Bank 2 Sensor 1/Bank 2 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP241B relates to o2 sensor signals swapped bank 2 sensor 1/bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P241CThrottle Actuator Control System - Ice Blockage Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP241C relates to throttle actuator control system - ice blockage bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P241DSCR Inducement - Forced Engine ShutdownCheck soonSensors & Electronics30–120 minutes for initial diagnosisP241D relates to scr inducement - forced engine shutdown. Check the fault conditions and vehicle-specific procedure before replacing parts.P241EReductant Heater Coolant Control Valve Stuck ClosedCheck soonEngine Problems30–120 minutes for initial diagnosisP241E relates to reductant heater coolant control valve stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.P241FEGR Cooler B Efficiency Below ThresholdCheck soonEmissions System30–120 minutes for initial diagnosisP241F relates to egr cooler b efficiency below threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2420EVAP System Switching Valve Control Circuit HighLow priorityEmissions System30–120 minutes for initial diagnosisP2420 relates to evap system switching valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2421EVAP System Vent Valve Stuck OpenLow priorityEmissions System30–120 minutes for initial diagnosisP2421 relates to evap system vent valve stuck open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2422EVAP System Vent Valve Stuck ClosedLow priorityEmissions System30–120 minutes for initial diagnosisP2422 relates to evap system vent valve stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.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.