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9,253 diagnostic guides

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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.

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

Diagnostic codes

Showing 121–144 of 1939

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P013BO2 Sensor Slow Response - Lean to Rich Bank 1 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP013B relates to o2 sensor slow response - lean to rich bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P013CO2 Sensor Slow Response - Rich to Lean Bank 2 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP013C relates to o2 sensor slow response - rich to lean bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P013DO2 Sensor Slow Response - Lean to Rich Bank 2 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP013D relates to o2 sensor slow response - lean to rich bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P013EO2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP013E relates to o2 sensor delayed response - rich to lean bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P013FO2 Sensor Delayed Response - Lean to Rich Bank 1 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP013F relates to o2 sensor delayed response - lean to rich bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P014AO2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP014A relates to o2 sensor delayed response - rich to lean bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P014BO2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP014B relates to o2 sensor delayed response - lean to rich bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P014CO2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP014C relates to o2 sensor slow response - rich to lean bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P014DO2 Sensor Slow Response - Lean to Rich Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP014D relates to o2 sensor slow response - lean to rich bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P014EO2 Sensor Slow Response - Rich to Lean Bank 2 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP014E relates to o2 sensor slow response - rich to lean bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P014FO2 Sensor Slow Response - Lean to Rich Bank 2 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP014F relates to o2 sensor slow response - lean to rich bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P015AO2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP015A relates to o2 sensor delayed response - rich to lean bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P015BO2 Sensor Delayed Response - Lean to Rich Bank 1 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP015B relates to o2 sensor delayed response - lean to rich bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P015CO2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP015C relates to o2 sensor delayed response - rich to lean bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P015DO2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP015D relates to o2 sensor delayed response - lean to rich bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P0195Engine Oil Temperature Sensor A CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0195 relates to engine oil temperature sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0196Engine Oil Temperature Sensor A Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0196 relates to engine oil temperature sensor a range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0197Engine Oil Temperature Sensor A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0197 relates to engine oil temperature sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0198Engine Oil Temperature Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0198 relates to engine oil temperature sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0199Engine Oil Temperature Sensor A Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0199 relates to engine oil temperature sensor a circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P019AO2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP019A relates to o2 sensor delayed response - rich to lean bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P019BO2 Sensor Delayed Response - Lean to Rich Bank 1 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP019B relates to o2 sensor delayed response - lean to rich bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P019CO2 Sensor Delayed Response - Rich to Lean Bank 2 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP019C relates to o2 sensor delayed response - rich to lean bank 2 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P019DO2 Sensor Delayed Response - Lean to Rich Bank 2 Sensor 3Check soonSensors & Electronics30–120 minutes for initial diagnosisP019D relates to o2 sensor delayed response - lean to rich bank 2 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.