Fuel System Codes
5,039 OBD-II diagnostic trouble codes in this category.
Showing page 16 of 51 (5,039 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P0ADA | Hybrid/EV Battery Positive Contactor Control Circuit Range/Performance | Fuel Metering | Medium |
| P0ADB | Hybrid/EV Battery Positive Contactor Control Circuit Low | Fuel Metering | Medium |
| P0ADC | Hybrid/EV Battery Positive Contactor Control Circuit High | Fuel Metering | Medium |
| P0ADD | Hybrid/EV Battery Negative Contactor Control Circuit/Open | Fuel Metering | Medium |
| P0ADE | Hybrid/EV Battery Negative Contactor Control Circuit Range/Performance | Fuel Metering | Medium |
| P0ADF | Hybrid/EV Battery Negative Contactor Control Circuit Low | Fuel Metering | Medium |
| P0AE0 | Hybrid/EV Battery Negative Contactor Control Circuit High | Fuel Metering | Medium |
| P0AE1 | Hybrid/EV Battery Precharge Contactor Circuit | Fuel Metering | Medium |
| P0AE2 | Hybrid/EV Battery Precharge Contactor Circuit Stuck Closed | Fuel Metering | Medium |
| P0AE3 | Hybrid/EV Battery Precharge Contactor Circuit Stuck Open | Fuel Metering | Medium |
| P0AE4 | Hybrid/EV Battery Precharge Contactor A Control Circuit/Open | Fuel Metering | Medium |
| P0AE5 | Hybrid/EV Battery Precharge Contactor A Control Circuit Range/Performance | Fuel Metering | Medium |
| P0AE6 | Hybrid/EV Battery Precharge Contactor A Control Circuit Low | Fuel Metering | Medium |
| P0AE7 | Hybrid/EV Battery Precharge Contactor A Control Circuit High | Fuel Metering | Medium |
| P0AE8 | Hybrid/EV Battery Temperature Sensor D Circuit | Fuel Metering | Medium |
| P0AE9 | Hybrid/EV Battery Temperature Sensor D Circuit Range/Performance | Fuel Metering | Medium |
| P0AEA | Hybrid/EV Battery Temperature Sensor D Circuit Low | Fuel Metering | Medium |
| P0AEB | Hybrid/EV Battery Temperature Sensor D Circuit High | Fuel Metering | Medium |
| P0AEC | Hybrid/EV Battery Temperature Sensor D Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P0AED | Drive Motor Inverter Temperature Sensor A Circuit | Fuel Metering | Medium |
| P0AEE | Drive Motor Inverter Temperature Sensor A Circuit Range/Performance | Fuel Metering | Medium |
| P0AEF | Drive Motor Inverter Temperature Sensor A Circuit Low | Fuel Metering | Medium |
| P0AF0 | Drive Motor Inverter Temperature Sensor A Circuit High | Fuel Metering | Medium |
| P0AF1 | Drive Motor Inverter Temperature Sensor A Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P0AF2 | Drive Motor Inverter Temperature Sensor B Circuit | Fuel Metering | Medium |
| P0AF3 | Drive Motor Inverter Temperature Sensor B Circuit Range/Performance | Fuel Metering | Medium |
| P0AF4 | Drive Motor Inverter Temperature Sensor B Circuit Low | Fuel Metering | Medium |
| P0AF5 | Drive Motor Inverter Temperature Sensor B Circuit High | Fuel Metering | Medium |
| P0AF6 | Drive Motor Inverter Temperature Sensor B Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P0AF7 | 14 Volt Power Module Internal Temperature Too High | Fuel Metering | Medium |
| P0AF8 | Hybrid/EV Battery System Voltage | Fuel Metering | Medium |
| P0AF9 | Hybrid/EV Battery System Voltage Unstable | Fuel Metering | Medium |
| P0AFA | Hybrid/EV Battery System Voltage Low | Fuel Metering | Medium |
| P0AFB | Hybrid/EV Battery System Voltage High | Fuel Metering | Medium |
| P0AFC | Hybrid/EV Battery Pack Sensor Module | Fuel Metering | Medium |
| P0AFD | Hybrid/EV Battery Pack Temperature Too Low | Fuel Metering | Medium |
| P0AFE | Hybrid/EV Battery System Voltage Too Low for Voltage Step Up Conversion | Fuel Metering | Medium |
| P0AFF | System Voltage Too Low for Voltage Step Down Conversion | Fuel Metering | Medium |
| P0B00 | Electric/Auxiliary Transmission Fluid Pump Motor Phase U Current | Fuel Metering | Medium |
| P0B01 | Electric/Auxiliary Transmission Fluid Pump Motor Phase U Current Low | Fuel Metering | Medium |
| P0B02 | Electric/Auxiliary Transmission Fluid Pump Motor Phase U Current High | Fuel Metering | Medium |
| P0B03 | Electric/Auxiliary Transmission Fluid Pump Motor Phase V Current | Fuel Metering | Medium |
| P0B04 | Electric/Auxiliary Transmission Fluid Pump Motor Phase V Current Low | Fuel Metering | Medium |
| P0B05 | Electric/Auxiliary Transmission Fluid Pump Motor Phase V Current High | Fuel Metering | Medium |
| P0B06 | Electric/Auxiliary Transmission Fluid Pump Motor Phase W Current | Fuel Metering | Medium |
| P0B07 | Electric/Auxiliary Transmission Fluid Pump Motor Phase W Current Low | Fuel Metering | Medium |
| P0B08 | Electric/Auxiliary Transmission Fluid Pump Motor Phase W Current High | Fuel Metering | Medium |
| P0B09 | Electric/Auxiliary Transmission Fluid Pump A Motor Supply Voltage Circuit/Open | Fuel Metering | Medium |
| P0B0A | Electric/Auxiliary Transmission Fluid Pump A Motor Supply Voltage Circuit Low | Fuel Metering | Medium |
| P0B0B | Electric/Auxiliary Transmission Fluid Pump A Motor Supply Voltage Circuit High | Fuel Metering | Medium |
| P0B0C | Electric/Auxiliary Transmission Fluid Pump A Hydraulic Leakage | Fuel Metering | Medium |
| P0B0D | Electric/Auxiliary Transmission Fluid Pump Motor Control Module | Fuel Metering | Medium |
| P0B0E | Hybrid/EV Battery Pack Current Sensor B Circuit | Fuel Metering | Medium |
| P0B0F | Hybrid/EV Battery Pack Current Sensor B Circuit Range/Performance | Fuel Metering | Medium |
| P0B10 | Hybrid/EV Battery Pack Current Sensor B Circuit Low | Fuel Metering | Medium |
| P0B11 | Hybrid/EV Battery Pack Current Sensor B Circuit High | Fuel Metering | Medium |
| P0B12 | Hybrid/EV Battery Pack Current Sensor B Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P0B13 | Hybrid/EV Battery Pack Current Sensor A/B Correlation | Fuel Metering | Medium |
| P0B14 | Hybrid/EV Battery Pack Voltage Sense B Circuit | Fuel Metering | Medium |
| P0B15 | Hybrid/EV Battery Pack Voltage Sense B Circuit Range/Performance | Fuel Metering | Medium |
| P0B16 | Hybrid/EV Battery Pack Voltage Sense B Circuit Low | Fuel Metering | Medium |
| P0B17 | Hybrid/EV Battery Pack Voltage Sense B Circuit High | Fuel Metering | Medium |
| P0B18 | Hybrid/EV Battery Pack Voltage Sense B Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P0B19 | Hybrid/EV Battery Pack Voltage Sense C Circuit | Fuel Metering | Medium |
| P0B1A | Hybrid/EV Battery Pack Voltage Sense C Circuit Range/Performance | Fuel Metering | Medium |
| P0B1B | Hybrid/EV Battery Pack Voltage Sense C Circuit Low | Fuel Metering | Medium |
| P0B1C | Hybrid/EV Battery Pack Voltage Sense C Circuit High | Fuel Metering | Medium |
| P0B1D | Hybrid/EV Battery Pack Voltage Sense C Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P0B1E | Hybrid/EV Battery Pack Voltage Sense D Circuit | Fuel Metering | Medium |
| P0B1F | Hybrid/EV Battery Pack Voltage Sense D Circuit Range/Performance | Fuel Metering | Medium |
| P0B20 | Hybrid/EV Battery Pack Voltage Sense D Circuit Low | Fuel Metering | Medium |
| P0B21 | Hybrid/EV Battery Pack Voltage Sense D Circuit High | Fuel Metering | Medium |
| P0B22 | Hybrid/EV Battery Pack Voltage Sense D Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P0B23 | Hybrid/EV Battery A Voltage | Fuel Metering | Medium |
| P0B24 | Hybrid/EV Battery A Voltage Unstable | Fuel Metering | Medium |
| P0B25 | Hybrid/EV Battery A Voltage Low | Fuel Metering | Medium |
| P0B26 | Hybrid/EV Battery A Voltage High | Fuel Metering | Medium |
| P0B27 | Hybrid/EV Battery B Voltage | Fuel Metering | Medium |
| P0B28 | Hybrid/EV Battery B Voltage Unstable | Fuel Metering | Medium |
| P0B29 | Hybrid/EV Battery B Voltage Low | Fuel Metering | Medium |
| P0B2A | Hybrid/EV Battery B Voltage High | Fuel Metering | Medium |
| P0B2B | Hybrid/EV Battery C Voltage | Fuel Metering | Medium |
| P0B2C | Hybrid/EV Battery C Voltage Unstable | Fuel Metering | Medium |
| P0B2D | Hybrid/EV Battery C Voltage Low | Fuel Metering | Medium |
| P0B2E | Hybrid/EV Battery C Voltage High | Fuel Metering | Medium |
| P0B2F | Hybrid/EV Battery D Voltage | Fuel Metering | Medium |
| P0B30 | Hybrid/EV Battery D Voltage Unstable | Fuel Metering | Medium |
| P0B31 | Hybrid/EV Battery D Voltage Low | Fuel Metering | Medium |
| P0B32 | Hybrid/EV Battery D Voltage High | Fuel Metering | Medium |
| P0B33 | High Voltage Service Disconnect Circuit | Fuel Metering | Medium |
| P0B34 | High Voltage Service Disconnect Circuit Performance | Fuel Metering | Medium |
| P0B35 | High Voltage Service Disconnect Circuit Low | Fuel Metering | Medium |
| P0B36 | High Voltage Service Disconnect Circuit High | Fuel Metering | Medium |
| P0B37 | High Voltage Service Disconnect Open | Fuel Metering | Medium |
| P0B38 | Motor Electronics Coolant Pump B Control Circuit/Open | Fuel Metering | Medium |
| P0B39 | Motor Electronics Coolant Pump B Control Circuit Low | Fuel Metering | Medium |
| P0B3A | Motor Electronics Coolant Pump B Control Circuit High | Fuel Metering | Medium |
| P0B3B | Hybrid/EV Battery Voltage Sense A Circuit | Fuel Metering | Medium |
| P0B3C | Hybrid/EV Battery Voltage Sense A Circuit Range/Performance | Fuel Metering | Medium |
| P0B3D | Hybrid/EV Battery Voltage Sense A Circuit Low | 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.