Diagnostic library

Find an OBD2 code

Search the code from your scanner, then narrow the library by system, severity, or code family.

9,253 diagnostic guides

Sort

Find codes by symptomChoose what you notice to search matching code guides.

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.

P · Powertrain Clear all

Quick browse

Choose a vehicle system

Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

FiltersSeverity · family

Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

Vehicle coverage

These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 7033–7056 of 7353

Most searched first

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.P341ADeactivation/Intake Valve Control Circuit Performance Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP341A relates to deactivation/intake valve control circuit performance bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P341BDeactivation/Intake Valve Control Circuit Performance Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP341B relates to deactivation/intake valve control circuit performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P341CDeactivation/Exhaust Valve Control Circuit Performance Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP341C relates to deactivation/exhaust valve control circuit performance bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P341DDeactivation/Exhaust Valve Control Circuit Performance Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP341D relates to deactivation/exhaust valve control circuit performance bank 2. 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.P3427Cylinder 4 Deactivation/Intake Valve Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP3427 relates to cylinder 4 deactivation/intake valve control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P3428Cylinder 4 Deactivation/Intake Valve Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP3428 relates to cylinder 4 deactivation/intake valve control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P3429Cylinder 4 Exhaust Valve Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP3429 relates to cylinder 4 exhaust valve control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.