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.

Check soon 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 3193–3216 of 6682

Most searched first

P2079Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Intermittent Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2079 relates to intake manifold tuning (imt) valve position sensor/switch circuit intermittent bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P207AIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP207A relates to intake manifold tuning (imt) valve position sensor/switch circuit bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P207BIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Range/Performance Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP207B relates to intake manifold tuning (imt) valve position sensor/switch circuit range/performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P207CIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP207C relates to intake manifold tuning (imt) valve position sensor/switch circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P207DIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP207D relates to intake manifold tuning (imt) valve position sensor/switch circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P207EIntake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Intermittent Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP207E relates to intake manifold tuning (imt) valve position sensor/switch circuit intermittent bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P207FReductant Quality PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP207F relates to reductant quality performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2080Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 1Check soonEmissions System30–120 minutes for initial diagnosisP2080 relates to exhaust gas temperature sensor circuit range/performance bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2081Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 1Check soonEmissions System30–120 minutes for initial diagnosisP2081 relates to exhaust gas temperature sensor circuit intermittent bank 1 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2082Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 1Check soonEmissions System30–120 minutes for initial diagnosisP2082 relates to exhaust gas temperature sensor circuit range/performance bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2083Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 1Check soonEmissions System30–120 minutes for initial diagnosisP2083 relates to exhaust gas temperature sensor circuit intermittent bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2084Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 2Check soonEmissions System30–120 minutes for initial diagnosisP2084 relates to exhaust gas temperature sensor circuit range/performance bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2085Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 2Check soonEmissions System30–120 minutes for initial diagnosisP2085 relates to exhaust gas temperature sensor circuit intermittent bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2086Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 2Check soonEmissions System30–120 minutes for initial diagnosisP2086 relates to exhaust gas temperature sensor circuit range/performance bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2087Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 2Check soonEmissions System30–120 minutes for initial diagnosisP2087 relates to exhaust gas temperature sensor circuit intermittent bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2088A Camshaft Position Actuator Control Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2088 relates to a camshaft position actuator control circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2089A Camshaft Position Actuator Control Circuit High Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2089 relates to a camshaft position actuator control circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P208AReductant Pump A Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP208A relates to reductant pump a control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P208BReductant Pump A Control Performance/Stuck OffCheck soonSensors & Electronics30–120 minutes for initial diagnosisP208B relates to reductant pump a control performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P208CReductant Pump A Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP208C relates to reductant pump a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P208DReductant Pump A Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP208D relates to reductant pump a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P208EReductant Injection Valve Stuck Closed Bank 1 Unit 1Check soonFuel System30–120 minutes for initial diagnosisP208E relates to reductant injection valve stuck closed bank 1 unit 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P208FReductant Injection Valve Stuck Closed Bank 2 Unit 1Check soonFuel System30–120 minutes for initial diagnosisP208F relates to reductant injection valve stuck closed bank 2 unit 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2090B Camshaft Position Actuator Control Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2090 relates to b camshaft position actuator control circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.