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.

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 9049–9072 of 9253

Most searched first

P0061Heated Oxygen Sensor Heater Resistance Bank 2 Sensor 3Low prioritySensors & Electronics45–120 minutes for initial diagnosisP0061 means Heated Oxygen Sensor Heater Resistance Bank 2 Sensor 3. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0062Heated Oxygen Sensor Heater Control Circuit Bank 2 Sensor 3Low prioritySensors & Electronics45–120 minutes for initial diagnosisP0062 means Heated Oxygen Sensor Heater Control Circuit Bank 2 Sensor 3. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0063Heated Oxygen Sensor Heater Control Circuit Low Bank 2 Sensor 3Low prioritySensors & Electronics45–120 minutes for initial diagnosisP0063 means Heated Oxygen Sensor Heater Control Circuit Low Bank 2 Sensor 3. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0064Heated Oxygen Sensor Heater Control Circuit High Bank 2 Sensor 3Low prioritySensors & Electronics45–120 minutes for initial diagnosisP0064 means Heated Oxygen Sensor Heater Control Circuit High Bank 2 Sensor 3. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0065Air Assisted Injector Control Range/PerformanceCheck soonFuel System45–120 minutes for initial diagnosisP0065 means Air Assisted Injector Control Range/Performance. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0066Air Assisted Injector Control Circuit or Circuit LowCheck soonFuel System45–120 minutes for initial diagnosisP0066 means Air Assisted Injector Control Circuit or Circuit Low. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0067Air Assisted Injector Control Circuit HighCheck soonFuel System45–120 minutes for initial diagnosisP0067 means Air Assisted Injector Control Circuit High. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0068MAP/MAF–Throttle Position CorrelationCheck soonSensors & Electronics45–120 minutes for initial diagnosisP0068 means MAP/MAF–Throttle Position Correlation. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0070Ambient Air Temperature Sensor CircuitLow prioritySensors & Electronics30–90 minutes for initial diagnosisP0070 means Ambient Air Temperature Sensor Circuit. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0072Ambient Air Temperature Sensor Circuit LowLow prioritySensors & Electronics45–120 minutes for initial diagnosisP0072 means Ambient Air Temperature Sensor Circuit Low. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0073Ambient Air Temperature Sensor Circuit HighLow prioritySensors & Electronics30–90 minutes for initial diagnosisP0073 means Ambient Air Temperature Sensor Circuit High. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0074Ambient Air Temperature Sensor Circuit IntermittentLow prioritySensors & Electronics45–120 minutes for initial diagnosisP0074 means Ambient Air Temperature Sensor Circuit Intermittent. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0076Intake Valve Control Solenoid Circuit Low Bank 1Check soonEngine Problems45–120 minutes for initial diagnosisP0076 means Intake Valve Control Solenoid Circuit Low Bank 1. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0077Intake Valve Control Solenoid Circuit High Bank 1Check soonEngine Problems45–120 minutes for initial diagnosisP0077 means Intake Valve Control Solenoid Circuit High Bank 1. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.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.P0091Fuel Pressure Regulator 1 Control Circuit LowCheck soonFuel System45–120 minutes for initial diagnosisP0091 means Fuel Pressure Regulator 1 Control Circuit Low. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0092Fuel Pressure Regulator 1 Control Circuit HighCheck soonFuel System45–120 minutes for initial diagnosisP0092 means Fuel Pressure Regulator 1 Control Circuit High. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.