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9,253 diagnostic guides
Find codes by symptomChoose what you notice to search matching code guides.
Rough idle or shakingVibration while stoppedHard to startLong cranking or no-startEngine stallsCuts out at idle or on the roadHesitates or loses powerSlow response when acceleratingBattery light is onCharging system warningHarsh 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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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.
Diagnostic codes
Showing 4489–4512 of 8256
P2459Particulate Filter Regeneration Frequency Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP245AEGR Cooler Bypass Control Circuit/Open Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP245BEGR Cooler Bypass Control Circuit Range/Performance Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP245CEGR Cooler Bypass Control Circuit Low Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP245DEGR Cooler Bypass Control Circuit High Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP245EParticulate Filter Pressure Sensor B CircuitCheck soonEmissions System30–120 minutes for initial diagnosisP245FParticulate Filter Pressure Sensor B Circuit Range/PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP2460Particulate Filter Pressure Sensor B Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP2461Particulate Filter Pressure Sensor B Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2462Particulate Filter Pressure Sensor B Circuit Intermittent/ErraticCheck soonEmissions System30–120 minutes for initial diagnosisP2463Particulate Filter Restriction - Soot Accumulation Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP2464Particulate Filter Differential Pressure Too Low Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP2465Particulate Filter Differential Pressure Too High Bank 2Check soonEmissions System30–120 minutes for initial diagnosisP2466Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3Check soonEmissions System30–120 minutes for initial diagnosisP2467Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 3Check soonEmissions System30–120 minutes for initial diagnosisP2468Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 3Check soonEmissions System30–120 minutes for initial diagnosisP2469Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 3Check soonEmissions System30–120 minutes for initial diagnosisP246AExhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 3Check soonEmissions System30–120 minutes for initial diagnosisP246BVehicle Conditions Incorrect for Particulate Filter RegenerationCheck soonEmissions System30–120 minutes for initial diagnosisP246CParticulate Filter Restriction - Forced Limited Power Bank 1Check soonEmissions System30–120 minutes for initial diagnosisP246DParticulate Filter Pressure Sensor A/B CorrelationCheck soonEmissions System30–120 minutes for initial diagnosisP246EExhaust Gas Temperature Sensor Circuit Bank 1 Sensor 4Check soonEmissions System30–120 minutes for initial diagnosisP246FExhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 4Check soonEmissions System30–120 minutes for initial diagnosisP2470Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 4Check soonEmissions System30–120 minutes for initial diagnosis