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9,253 diagnostic guides

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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 2089–2110 of 2110

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P0158Oxygen Sensor Circuit High Voltage Bank 2 Sensor 2Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0158 means Oxygen Sensor Circuit High Voltage Bank 2 Sensor 2. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0161Oxygen Sensor Heater Circuit Bank 2 Sensor 2Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0161 means Oxygen Sensor Heater Circuit Bank 2 Sensor 2. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0223Throttle/Pedal Position Sensor B Circuit High InputSensors & ElectronicsFix P0223 throttle/pedal position sensor B code. Learn about dual TPS circuits and how to diagnose a high signal.P0224Throttle/Pedal Position Sensor/Switch B Circuit IntermittentCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0224 means Throttle/Pedal Position Sensor/Switch B Circuit Intermittent. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0225Throttle/Pedal Position Sensor/Switch C CircuitCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0225 means Throttle/Pedal Position Sensor/Switch C Circuit. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0226Throttle/Pedal Position Sensor/Switch C Circuit Range/PerformanceCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0226 means Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0227Throttle/Pedal Position Sensor/Switch C Circuit LowCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0227 means Throttle/Pedal Position Sensor/Switch C Circuit Low. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0228Throttle/Pedal Position Sensor/Switch C Circuit HighCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0228 means Throttle/Pedal Position Sensor/Switch C Circuit High. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0229Throttle/Pedal Position Sensor/Switch C Circuit IntermittentCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0229 means Throttle/Pedal Position Sensor/Switch C Circuit Intermittent. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0325Knock Sensor 1 Circuit Malfunction Bank 1Sensors & ElectronicsDiagnose P0325 knock sensor code. Learn what the knock sensor does and how to test and replace it.P0327Knock Sensor 1 Circuit Low Input Bank 1Sensors & ElectronicsUnderstand the P0327 low-input knock sensor code on Bank 1 and how it affects timing and performance.P0337Crankshaft Position Sensor A Circuit Low InputCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0337 means Crankshaft Position Sensor A Circuit Low Input. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0338Crankshaft Position Sensor A Circuit High InputCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0338 means Crankshaft Position Sensor A Circuit High Input. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0339Crankshaft Position Sensor A Circuit IntermittentCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0339 means Crankshaft Position Sensor A Circuit Intermittent. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0341Camshaft Position Sensor A Circuit Range/Performance Bank 1Sensors & ElectronicsDiagnose P0341 camshaft position sensor code. Learn what causes range/performance faults and how to fix them.P0342Camshaft Position Sensor A Circuit Low Input Bank 1Check soonSensors & Electronics45–120 minutes for initial diagnosisP0342 means Camshaft Position Sensor A Circuit Low Input Bank 1. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0343Camshaft Position Sensor A Circuit High Input Bank 1Check soonSensors & Electronics45–120 minutes for initial diagnosisP0343 means Camshaft Position Sensor A Circuit High Input Bank 1. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0344Camshaft Position Sensor A Circuit Intermittent Bank 1Check soonSensors & Electronics45–120 minutes for initial diagnosisP0344 means Camshaft Position Sensor A Circuit Intermittent Bank 1. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0463Fuel Level Sensor A Circuit High InputSensors & ElectronicsDiagnose P0463 fuel level sensor code. Learn why the fuel gauge reads wrong and how to fix the sending unit.P0502Vehicle Speed Sensor A Circuit Low InputCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0502 means Vehicle Speed Sensor A Circuit Low Input. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0503Vehicle Speed Sensor A Intermittent/Erratic/HighCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0503 means Vehicle Speed Sensor A Intermittent/Erratic/High. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P2195O2 Sensor Signal Stuck Lean Bank 1 Sensor 1Sensors & ElectronicsFix P2195 oxygen sensor stuck lean code. Learn why the upstream O2 sensor reads stuck lean and how to fix it.