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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.

Engine Problems P · Powertrain Clear all

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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 1033–1049 of 1049

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P0079Exhaust Valve Control Solenoid Circuit Low Bank 1Check soonEngine Problems45–120 minutes for initial diagnosisP0079 means Exhaust Valve Control Solenoid Circuit Low Bank 1. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0080Exhaust Valve Control Solenoid Circuit High Bank 1Check soonEngine Problems45–120 minutes for initial diagnosisP0080 means Exhaust Valve Control Solenoid Circuit High Bank 1. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0081Intake Valve Control Solenoid Circuit Bank 2Check soonEngine Problems45–120 minutes for initial diagnosisP0081 means Intake Valve Control Solenoid Circuit Bank 2. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0082Intake Valve Control Solenoid Circuit Low Bank 2Check soonEngine Problems45–120 minutes for initial diagnosisP0082 means Intake Valve Control Solenoid Circuit Low Bank 2. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0083Intake Valve Control Solenoid Circuit High Bank 2Check soonEngine Problems45–120 minutes for initial diagnosisP0083 means Intake Valve Control Solenoid Circuit High Bank 2. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0084Exhaust Valve Control Solenoid Circuit Bank 2Check soonEngine Problems45–120 minutes for initial diagnosisP0084 means Exhaust Valve Control Solenoid Circuit Bank 2. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0085Exhaust Valve Control Solenoid Circuit Low Bank 2Check soonEngine Problems45–120 minutes for initial diagnosisP0085 means Exhaust Valve Control Solenoid Circuit Low Bank 2. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0086Exhaust Valve Control Solenoid Circuit High Bank 2Check soonEngine Problems45–120 minutes for initial diagnosisP0086 means Exhaust Valve Control Solenoid Circuit High Bank 2. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0215Engine Shutoff Solenoid MalfunctionCheck soonEngine Problems45–120 minutes for initial diagnosisP0215 means Engine Shutoff Solenoid Malfunction. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0330Knock Sensor Circuit Malfunction Bank 2Engine ProblemsUnderstand P0330 knock sensor bank 2 code, why it can hurt performance, and how to fix it.P0350Ignition Coil Primary/Secondary Circuit MalfunctionCheck soonEngine Problems45–120 minutes for initial diagnosisP0350 means Ignition Coil Primary/Secondary Circuit Malfunction. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0351Ignition Coil A Primary/Secondary Circuit MalfunctionCheck soonEngine Problems45–120 minutes for initial diagnosisP0351 means Ignition Coil A Primary/Secondary Circuit Malfunction. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0352Ignition Coil B Primary/Secondary Circuit MalfunctionCheck soonEngine Problems45–120 minutes for initial diagnosisP0352 means Ignition Coil B Primary/Secondary Circuit Malfunction. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0353Ignition Coil C Primary/Secondary Circuit MalfunctionCheck soonEngine Problems45–120 minutes for initial diagnosisP0353 means Ignition Coil C Primary/Secondary Circuit Malfunction. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0354Ignition Coil D Primary/Secondary Circuit MalfunctionCheck soonEngine Problems45–120 minutes for initial diagnosisP0354 means Ignition Coil D Primary/Secondary Circuit Malfunction. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0355Ignition Coil E Primary/Secondary Circuit MalfunctionCheck soonEngine Problems45–120 minutes for initial diagnosisP0355 means Ignition Coil E Primary/Secondary Circuit Malfunction. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0606ECM/PCM Processor FaultEngine ProblemsDiagnose P0606 PCM processor code. Learn what an internal control module fault means and how to address it.