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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 289–312 of 7353

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P0170Fuel Trim Bank 1Check soonFuel System30–120 minutes for initial diagnosisP0170 relates to fuel trim bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P0173Fuel Trim Bank 2Check soonFuel System30–120 minutes for initial diagnosisP0173 relates to fuel trim bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P0174System Too Lean Bank 2 - Causes & SolutionsFuel SystemFix P0174 lean condition on Bank 2. Often appears with P0171. Learn the common causes and effective repair strategies.P0175System Too Rich Bank 2 - Complete GuideFuel SystemFix P0175 rich condition on Bank 2. Often appears with P0172. Learn causes and repair strategies.P0176Fuel Composition Sensor CircuitCheck soonFuel System30–120 minutes for initial diagnosisP0176 relates to fuel composition sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0177Fuel Composition Sensor Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP0177 relates to fuel composition sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0178Fuel Composition Sensor Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP0178 relates to fuel composition sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0179Fuel Composition Sensor Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP0179 relates to fuel composition sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P017ACylinder Head Temperature Sensor A CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP017A relates to cylinder head temperature sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P017BCylinder Head Temperature Sensor A Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP017B relates to cylinder head temperature sensor a range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P017CCylinder Head Temperature Sensor A Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP017C relates to cylinder head temperature sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P017DCylinder Head Temperature Sensor A Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP017D relates to cylinder head temperature sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P017ECylinder Head Temperature Sensor A Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP017E relates to cylinder head temperature sensor a circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P017FEVAP System Leak Detection Pump Module Air Filter RestrictedLow priorityEmissions System30–120 minutes for initial diagnosisP017F relates to evap system leak detection pump module air filter restricted. Check the fault conditions and vehicle-specific procedure before replacing parts.P0180Fuel Temperature Sensor A CircuitCheck soonFuel System30–120 minutes for initial diagnosisP0180 relates to fuel temperature sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0181Fuel Temperature Sensor A Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP0181 relates to fuel temperature sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0182Fuel Temperature Sensor A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP0182 relates to fuel temperature sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0183Fuel Temperature Sensor A Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP0183 relates to fuel temperature sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0184Fuel Temperature Sensor A Circuit IntermittentCheck soonFuel System30–120 minutes for initial diagnosisP0184 relates to fuel temperature sensor a circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0185Fuel Temperature Sensor B CircuitCheck soonFuel System30–120 minutes for initial diagnosisP0185 relates to fuel temperature sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0186Fuel Temperature Sensor B Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP0186 relates to fuel temperature sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0187Fuel Temperature Sensor B Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP0187 relates to fuel temperature sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0188Fuel Temperature Sensor B Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP0188 relates to fuel temperature sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0189Fuel Temperature Sensor B Circuit IntermittentCheck soonFuel System30–120 minutes for initial diagnosisP0189 relates to fuel temperature sensor b circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.