Fuel System Codes
5,039 OBD-II diagnostic trouble codes in this category.
Showing page 14 of 51 (5,039 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P0A12 | DC/DC Converter Enable Circuit Low | Fuel Metering | Medium |
| P0A13 | DC/DC Converter Enable Circuit High | Fuel Metering | Medium |
| P0A14 | Engine Mount A Control Circuit/Open | Fuel Metering | Medium |
| P0A15 | Engine Mount A Control Circuit Low | Fuel Metering | Medium |
| P0A16 | Engine Mount A Control Circuit High | Fuel Metering | Medium |
| P0A17 | Motor Torque Sensor Circuit | Fuel Metering | Medium |
| P0A18 | Motor Torque Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P0A19 | Motor Torque Sensor Circuit Low | Fuel Metering | Medium |
| P0A1A | Generator Control Module | Fuel Metering | Medium |
| P0A1B | Drive Motor A Control Module Performance | Fuel Metering | Medium |
| P0A1C | Drive Motor B Control Module Performance | Fuel Metering | Medium |
| P0A1D | Hybrid/EV Powertrain Control Module A | Fuel Metering | Medium |
| P0A1E | Starter/Generator Control Module | Fuel Metering | Medium |
| P0A1F | Battery Energy Control Module A Performance | Fuel Metering | Medium |
| P0A20 | Motor Torque Sensor Circuit High | Fuel Metering | Medium |
| P0A21 | Motor Torque Sensor Circuit Intermittent | Fuel Metering | Medium |
| P0A22 | Generator Torque Sensor Circuit | Fuel Metering | Medium |
| P0A23 | Generator Torque Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P0A24 | Generator Torque Sensor Circuit Low | Fuel Metering | Medium |
| P0A25 | Generator Torque Sensor Circuit High | Fuel Metering | Medium |
| P0A26 | Generator Torque Sensor Circuit Intermittent | Fuel Metering | Medium |
| P0A27 | Hybrid/EV Battery Power Off Circuit | Fuel Metering | Medium |
| P0A28 | Hybrid/EV Battery Power Off Circuit Low | Fuel Metering | Medium |
| P0A29 | Hybrid/EV Battery Power Off Circuit High | Fuel Metering | Medium |
| P0A2A | Drive Motor A Temperature Sensor A Circuit | Fuel Metering | Medium |
| P0A2B | Drive Motor A Temperature Sensor A Circuit Range/Performance | Fuel Metering | Medium |
| P0A2C | Drive Motor A Temperature Sensor A Circuit Low | Fuel Metering | Medium |
| P0A2D | Drive Motor A Temperature Sensor A Circuit High | Fuel Metering | Medium |
| P0A2E | Drive Motor A Temperature Sensor A Circuit Intermittent | Fuel Metering | Medium |
| P0A2F | Drive Motor A Over Temperature | Fuel Metering | Medium |
| P0A30 | Drive Motor B Temperature Sensor Circuit | Fuel Metering | Medium |
| P0A31 | Drive Motor B Temperature Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P0A32 | Drive Motor B Temperature Sensor Circuit Low | Fuel Metering | Medium |
| P0A33 | Drive Motor B Temperature Sensor Circuit High | Fuel Metering | Medium |
| P0A34 | Drive Motor B Temperature Sensor Circuit Intermittent | Fuel Metering | Medium |
| P0A35 | Drive Motor B Over Temperature | Fuel Metering | Medium |
| P0A36 | Generator Temperature Sensor Circuit | Fuel Metering | Medium |
| P0A37 | Generator Temperature Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P0A38 | Generator Temperature Sensor Circuit Low | Fuel Metering | Medium |
| P0A39 | Generator Temperature Sensor Circuit High | Fuel Metering | Medium |
| P0A3A | Generator Temperature Sensor Circuit Intermittent | Fuel Metering | Medium |
| P0A3B | Generator A Over Temperature | Fuel Metering | Medium |
| P0A3C | Drive Motor A Inverter Over Temperature | Fuel Metering | Medium |
| P0A3D | Drive Motor B Inverter Over Temperature | Fuel Metering | Medium |
| P0A3E | Generator Inverter Over Temperature | Fuel Metering | Medium |
| P0A3F | Drive Motor A Position Sensor Circuit | Fuel Metering | Medium |
| P0A40 | Drive Motor A Position Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P0A41 | Drive Motor A Position Sensor Circuit Low | Fuel Metering | Medium |
| P0A42 | Drive Motor A Position Sensor Circuit High | Fuel Metering | Medium |
| P0A43 | Drive Motor A Position Sensor Circuit Intermittent | Fuel Metering | Medium |
| P0A44 | Drive Motor A Position Sensor Circuit Overspeed | Fuel Metering | Medium |
| P0A45 | Drive Motor B Position Sensor Circuit | Fuel Metering | Medium |
| P0A46 | Drive Motor B Position Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P0A47 | Drive Motor B Position Sensor Circuit Low | Fuel Metering | Medium |
| P0A48 | Drive Motor B Position Sensor Circuit High | Fuel Metering | Medium |
| P0A49 | Drive Motor B Position Sensor Circuit Intermittent | Fuel Metering | Medium |
| P0A4A | Drive Motor B Position Sensor Circuit Overspeed | Fuel Metering | Medium |
| P0A4B | Generator Position Sensor Circuit | Fuel Metering | Medium |
| P0A4C | Generator Position Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P0A4D | Generator Position Sensor Circuit Low | Fuel Metering | Medium |
| P0A4E | Generator Position Sensor Circuit High | Fuel Metering | Medium |
| P0A4F | Generator Position Sensor Circuit Intermittent | Fuel Metering | Medium |
| P0A50 | Generator Position Sensor Circuit Overspeed | Fuel Metering | Medium |
| P0A51 | Drive Motor A Current Sensor Circuit | Fuel Metering | Medium |
| P0A52 | Drive Motor A Current Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P0A53 | Drive Motor A Current Sensor Circuit Low | Fuel Metering | Medium |
| P0A54 | Drive Motor A Current Sensor Circuit High | Fuel Metering | Medium |
| P0A55 | Drive Motor B Current Sensor Circuit | Fuel Metering | Medium |
| P0A56 | Drive Motor B Current Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P0A57 | Drive Motor B Current Sensor Circuit Low | Fuel Metering | Medium |
| P0A58 | Drive Motor B Current Sensor Circuit High | Fuel Metering | Medium |
| P0A59 | Generator Current Sensor Circuit | Fuel Metering | Medium |
| P0A5A | Generator Current Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P0A5B | Generator Current Sensor Circuit Low | Fuel Metering | Medium |
| P0A5C | Generator Current Sensor Circuit High | Fuel Metering | Medium |
| P0A5D | Drive Motor A Phase U Current | Fuel Metering | Medium |
| P0A5E | Drive Motor A Phase U Current Low | Fuel Metering | Medium |
| P0A5F | Drive Motor A Phase U Current High | Fuel Metering | Medium |
| P0A60 | Drive Motor A Phase V Current | Fuel Metering | Medium |
| P0A61 | Drive Motor A Phase V Current Low | Fuel Metering | Medium |
| P0A62 | Drive Motor A Phase V Current High | Fuel Metering | Medium |
| P0A63 | Drive Motor A Phase W Current | Fuel Metering | Medium |
| P0A64 | Drive Motor A Phase W Current Low | Fuel Metering | Medium |
| P0A65 | Drive Motor A Phase W Current High | Fuel Metering | Medium |
| P0A66 | Drive Motor B Phase U Current | Fuel Metering | Medium |
| P0A67 | Drive Motor B Phase U Current Low | Fuel Metering | Medium |
| P0A68 | Drive Motor B Phase U Current High | Fuel Metering | Medium |
| P0A69 | Drive Motor B Phase V Current | Fuel Metering | Medium |
| P0A6A | Drive Motor B Phase V Current Low | Fuel Metering | Medium |
| P0A6B | Drive Motor B Phase V Current High | Fuel Metering | Medium |
| P0A6C | Drive Motor B Phase W Current | Fuel Metering | Medium |
| P0A6D | Drive Motor B Phase W Current Low | Fuel Metering | Medium |
| P0A6E | Drive Motor B Phase W Current High | Fuel Metering | Medium |
| P0A6F | Generator Phase U Current | Fuel Metering | Medium |
| P0A70 | Generator Phase U Current Low | Fuel Metering | Medium |
| P0A71 | Generator Phase U Current High | Fuel Metering | Medium |
| P0A72 | Generator Phase V Current | Fuel Metering | Medium |
| P0A73 | Generator Phase V Current Low | Fuel Metering | Medium |
| P0A74 | Generator Phase V Current High | Fuel Metering | Medium |
| P0A75 | Generator Phase W Current | Fuel Metering | Medium |
About Fuel System Codes
This page lists all 5,039 OBD-II diagnostic trouble codes classified under the Fuel System category. These codes are stored by your vehicle's onboard computer when a sensor detects a malfunction in the fuel system system. Each code begins with a letter indicating the system (P for Powertrain, B for Body, C for Chassis, U for Network) followed by four digits that identify the specific fault.
When your check engine light comes on, an OBD-II scanner reads these stored codes to help pinpoint the problem. Generic codes (where the second digit is 0) follow the SAE J2012 standard and mean the same thing on every vehicle. Manufacturer-specific codes (where the second digit is 1) may have different meanings depending on the vehicle brand.
Click any code in the table above to see its full description, possible causes, common symptoms, and step-by-step repair guidance. Use the search box to quickly find a specific code within this category.