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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 817–840 of 987

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P3403Cylinder 1 Deactivation/Intake Valve Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP3403 relates to cylinder 1 deactivation/intake valve control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P3404Cylinder 1 Deactivation/Intake Valve Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP3404 relates to cylinder 1 deactivation/intake valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P3405Cylinder 1 Exhaust Valve Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP3405 relates to cylinder 1 exhaust valve control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P3406Cylinder 1 Exhaust Valve Control Circuit PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP3406 relates to cylinder 1 exhaust valve control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P3407Cylinder 1 Exhaust Valve Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP3407 relates to cylinder 1 exhaust valve control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P3408Cylinder 1 Exhaust Valve Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP3408 relates to cylinder 1 exhaust valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P3409Cylinder 2 Deactivation/Intake Valve Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP3409 relates to cylinder 2 deactivation/intake valve control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P3410Cylinder 2 Deactivation/Intake Valve Control Circuit PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP3410 relates to cylinder 2 deactivation/intake valve control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P3411Cylinder 2 Deactivation/Intake Valve Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP3411 relates to cylinder 2 deactivation/intake valve control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P3412Cylinder 2 Deactivation/Intake Valve Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP3412 relates to cylinder 2 deactivation/intake valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P3413Cylinder 2 Exhaust Valve Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP3413 relates to cylinder 2 exhaust valve control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P3414Cylinder 2 Exhaust Valve Control Circuit PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP3414 relates to cylinder 2 exhaust valve control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P3415Cylinder 2 Exhaust Valve Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP3415 relates to cylinder 2 exhaust valve control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P3416Cylinder 2 Exhaust Valve Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP3416 relates to cylinder 2 exhaust valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P3417Cylinder 3 Deactivation/Intake Valve Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP3417 relates to cylinder 3 deactivation/intake valve control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P3418Cylinder 3 Deactivation/Intake Valve Control Circuit PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP3418 relates to cylinder 3 deactivation/intake valve control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P3419Cylinder 3 Deactivation/Intake Valve Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP3419 relates to cylinder 3 deactivation/intake valve control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P3420Cylinder 3 Deactivation/Intake Valve Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP3420 relates to cylinder 3 deactivation/intake valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P3421Cylinder 3 Exhaust Valve Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP3421 relates to cylinder 3 exhaust valve control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P3422Cylinder 3 Exhaust Valve Control Circuit PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP3422 relates to cylinder 3 exhaust valve control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P3423Cylinder 3 Exhaust Valve Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP3423 relates to cylinder 3 exhaust valve control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P3424Cylinder 3 Exhaust Valve Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP3424 relates to cylinder 3 exhaust valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P3425Cylinder 4 Deactivation/Intake Valve Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP3425 relates to cylinder 4 deactivation/intake valve control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P3426Cylinder 4 Deactivation/Intake Valve Control Circuit PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP3426 relates to cylinder 4 deactivation/intake valve control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.