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.

Fuel System Low priority 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 1–24 of 34

Most searched first

P0460Fuel Level Sensor Circuit MalfunctionLow priorityFuel System30–120 minutes for initial diagnosisP0460 indicates a fault related to fuel level sensor circuit malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0461Fuel Level Sensor Circuit Range/PerformanceLow priorityFuel System30–120 minutes for initial diagnosisP0461 indicates a fault related to fuel level sensor circuit range/performance. Learn the likely causes and a practical diagnostic order before replacing parts.P0462Fuel Level Sensor Circuit Low InputLow priorityFuel System30–120 minutes for initial diagnosisP0462 indicates a fault related to fuel level sensor circuit low input. Learn the likely causes and a practical diagnostic order before replacing parts.P0464Fuel Level Sensor Circuit IntermittentLow priorityFuel System30–120 minutes for initial diagnosisP0464 indicates a fault related to fuel level sensor circuit intermittent. Learn the likely causes and a practical diagnostic order before replacing parts.P04BBFuel Fill Door Lock Control Circuit/OpenLow priorityFuel System30–120 minutes for initial diagnosisP04BB relates to fuel fill door lock control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P04BCFuel Fill Door Lock Control Range/PerformanceLow priorityFuel System30–120 minutes for initial diagnosisP04BC relates to fuel fill door lock control range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P04BDFuel Fill Door Lock Control Circuit LowLow priorityFuel System30–120 minutes for initial diagnosisP04BD relates to fuel fill door lock control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P04BEFuel Fill Door Lock Control Circuit HighLow priorityFuel System30–120 minutes for initial diagnosisP04BE relates to fuel fill door lock control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C3Fuel Fill Door Lock Position Sensor/Switch CircuitLow priorityFuel System30–120 minutes for initial diagnosisP04C3 relates to fuel fill door lock position sensor/switch circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C4Fuel Fill Door Lock Position Sensor/Switch Circuit Range/PerformanceLow priorityFuel System30–120 minutes for initial diagnosisP04C4 relates to fuel fill door lock position sensor/switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C5Fuel Fill Door Lock Position Sensor/Switch Circuit LowLow priorityFuel System30–120 minutes for initial diagnosisP04C5 relates to fuel fill door lock position sensor/switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C6Fuel Fill Door Lock Position Sensor/Switch Circuit HighLow priorityFuel System30–120 minutes for initial diagnosisP04C6 relates to fuel fill door lock position sensor/switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P04C7Fuel Fill Door Lock Position Sensor/Switch Circuit Intermittent/ErraticLow priorityFuel System30–120 minutes for initial diagnosisP04C7 relates to fuel fill door lock position sensor/switch circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P0624Fuel Cap Lamp Control CircuitLow priorityFuel System30–120 minutes for initial diagnosisP0624 relates to fuel cap lamp control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2065Fuel Level Sensor B CircuitLow priorityFuel System30–120 minutes for initial diagnosisP2065 relates to fuel level sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2066Fuel Level Sensor B PerformanceLow priorityFuel System30–120 minutes for initial diagnosisP2066 relates to fuel level sensor b performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2067Fuel Level Sensor B Circuit LowLow priorityFuel System30–120 minutes for initial diagnosisP2067 relates to fuel level sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2068Fuel Level Sensor B Circuit HighLow priorityFuel System30–120 minutes for initial diagnosisP2068 relates to fuel level sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2069Fuel Level Sensor B Circuit IntermittentLow priorityFuel System30–120 minutes for initial diagnosisP2069 relates to fuel level sensor b circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2408Fuel Cap Sensor/Switch CircuitLow priorityFuel System30–120 minutes for initial diagnosisP2408 relates to fuel cap sensor/switch circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2409Fuel Cap Sensor/Switch Circuit Range/PerformanceLow priorityFuel System30–120 minutes for initial diagnosisP2409 relates to fuel cap sensor/switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2410Fuel Cap Sensor/Switch Circuit LowLow priorityFuel System30–120 minutes for initial diagnosisP2410 relates to fuel cap sensor/switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2411Fuel Cap Sensor/Switch Circuit HighLow priorityFuel System30–120 minutes for initial diagnosisP2411 relates to fuel cap sensor/switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2412Fuel Cap Sensor/Switch Circuit Intermittent/ErraticLow priorityFuel System30–120 minutes for initial diagnosisP2412 relates to fuel cap sensor/switch circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.