Fuel System Codes
5,039 OBD-II diagnostic trouble codes in this category.
Showing page 49 of 51 (5,039 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P2D4E | Hybrid/EV Battery Pack J Over Temperature | Fuel Metering | Medium |
| P2D4F | Hybrid/EV Battery Pack K Over Temperature | Fuel Metering | Medium |
| P2D50 | Hybrid/EV Battery Pack L Over Temperature | Fuel Metering | Medium |
| P2D51 | Air Assisted Injector Control Circuit | Fuel Metering | Medium |
| P2D52 | Hybrid/EV Battery Pack Coolant Temperature Sensor C Circuit | Fuel Metering | Medium |
| P2D53 | Hybrid/EV Battery Pack Coolant Temperature Sensor C Circuit Range/Performance | Fuel Metering | Medium |
| P2D54 | Hybrid/EV Battery Pack Coolant Temperature Sensor C Circuit Low | Fuel Metering | Medium |
| P2D55 | Hybrid/EV Battery Pack Coolant Temperature Sensor C Circuit High | Fuel Metering | Medium |
| P2D56 | Hybrid/EV Battery Pack Coolant Temperature Sensor C Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2D57 | Generator B Control Circuit Range/Performance | Fuel Metering | Medium |
| P2D58 | Generator B Mechanical Performance | Fuel Metering | Medium |
| P2D59 | Generator B Over Temperature | Fuel Metering | Medium |
| P2D5A | Reductant Level Sensor A/B Correlation | Fuel Metering | Medium |
| P2D5B | Battery Charging System Positive Contactor C Circuit | Fuel Metering | Medium |
| P2D5C | Battery Charging System Positive Contactor C Stuck Closed | Fuel Metering | Medium |
| P2D5D | Battery Charging System Positive Contactor C Stuck Open | Fuel Metering | Medium |
| P2D5E | Battery Charging System Positive Contactor C Control Circuit/Open | Fuel Metering | Medium |
| P2D5F | Battery Charging System Positive Contactor C Control Circuit Range/Performance | Fuel Metering | Medium |
| P2D60 | Battery Charging System Positive Contactor C Control Circuit Low | Fuel Metering | Medium |
| P2D61 | Battery Charging System Positive Contactor C Control Circuit High | Fuel Metering | Medium |
| P2D62 | Battery Charging System Negative Contactor C Circuit | Fuel Metering | Medium |
| P2D63 | Battery Charging System Negative Contactor C Stuck Closed | Fuel Metering | Medium |
| P2D64 | Battery Charging System Negative Contactor C Stuck Open | Fuel Metering | Medium |
| P2D65 | Battery Charging System Negative Contactor C Control Circuit/Open | Fuel Metering | Medium |
| P2D66 | Battery Charging System Negative Contactor C Control Circuit Range/Performance | Fuel Metering | Medium |
| P2D67 | Battery Charging System Negative Contactor C Control Circuit Low | Fuel Metering | Medium |
| P2D68 | Battery Charging System Negative Contactor C Control Circuit High | Fuel Metering | Medium |
| P2D69 | Battery Charging System Positive Contactor D Circuit | Fuel Metering | Medium |
| P2D6A | Battery Charging System Positive Contactor D Stuck Closed | Fuel Metering | Medium |
| P2D6B | Battery Charging System Positive Contactor D Stuck Open | Fuel Metering | Medium |
| P2D6C | Battery Charging System Positive Contactor D Control Circuit/Open | Fuel Metering | Medium |
| P2D6D | Battery Charging System Positive Contactor D Control Circuit Range/Performance | Fuel Metering | Medium |
| P2D6E | Battery Charging System Positive Contactor D Control Circuit Low | Fuel Metering | Medium |
| P2D6F | Battery Charging System Positive Contactor D Control Circuit High | Fuel Metering | Medium |
| P2D70 | Battery Charging System Negative Contactor D Circuit | Fuel Metering | Medium |
| P2D71 | Battery Charging System Negative Contactor D Stuck Closed | Fuel Metering | Medium |
| P2D72 | Battery Charging System Negative Contactor D Stuck Open | Fuel Metering | Medium |
| P2D73 | Battery Charging System Negative Contactor D Control Circuit/Open | Fuel Metering | Medium |
| P2D74 | Battery Charging System Negative Contactor D Control Circuit Range/Performance | Fuel Metering | Medium |
| P2D75 | Battery Charging System Negative Contactor D Control Circuit Low | Fuel Metering | Medium |
| P2D76 | Battery Charging System Negative Contactor D Control Circuit High | Fuel Metering | Medium |
| P2D77 | Battery Charger Control Module B Performance | Fuel Metering | Medium |
| P2D78 | Battery Charger Control Module B Processor Performance | Fuel Metering | Medium |
| P2D79 | Charging Stop Switch Circuit | Fuel Metering | Medium |
| P2D7A | Charging Stop Switch Circuit High | Fuel Metering | Medium |
| P2D7B | Charging Stop Switch Circuit Low | Fuel Metering | Medium |
| P2D7C | Charging Stop Switch Circuit Performance | Fuel Metering | Medium |
| P2D7D | Charging Stop Switch Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2D7E | Charging Start Switch Circuit | Fuel Metering | Medium |
| P2D7F | Charging Start Switch Circuit High | Fuel Metering | Medium |
| P2D80 | Charging Start Switch Circuit Low | Fuel Metering | Medium |
| P2D81 | Charging Start Switch Circuit Performance | Fuel Metering | Medium |
| P2D82 | Charging Start Switch Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2D83 | Battery Charger B Input Current Sensor Circuit Low | Fuel Metering | Medium |
| P2D84 | Battery Charger B Input Current Sensor Circuit High | Fuel Metering | Medium |
| P2D85 | Battery Charger B Input Current Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P2D86 | Fuel Temperature Sensor A/B Correlation | Fuel Metering | Medium |
| P2D87 | Fan 1 Control Module Over Temperature | Fuel Metering | Medium |
| P2D88 | Fan 1 Control Module Performance | Fuel Metering | Medium |
| P2D89 | Fan 1 Control Module Supply Voltage Circuit | Fuel Metering | Medium |
| P2D8A | Fan 2 Control Module Over Temperature | Fuel Metering | Medium |
| P2D8B | Fan 2 Control Module Performance | Fuel Metering | Medium |
| P2D8C | Fan 2 Control Module Supply Voltage Circuit | Fuel Metering | Medium |
| P2D8D | Engine Disconnect Clutch Mechanical Performance | Fuel Metering | Medium |
| P2D8E | Engine Oil Pressure Sensor/Switch C Circuit | Fuel Metering | Medium |
| P2D8F | Engine Oil Pressure Sensor/Switch C Circuit Low | Fuel Metering | Medium |
| P2D90 | Engine Oil Pressure Sensor/Switch C Circuit High | Fuel Metering | Medium |
| P2D91 | Engine Oil Pressure Sensor/Switch C Circuit Range/Performance | Fuel Metering | Medium |
| P2D92 | Starter/Generator Phase X Current Sensor Circuit High | Fuel Metering | Medium |
| P2D93 | Starter/Generator Phase Y Current Sensor Circuit High | Fuel Metering | Medium |
| P2D94 | Starter/Generator Phase Z Current Sensor Circuit High | Fuel Metering | Medium |
| P2D95 | Starter/Generator Phase X Current Sensor Circuit Low | Fuel Metering | Medium |
| P2D96 | Starter/Generator Phase Y Current Sensor Circuit Low | Fuel Metering | Medium |
| P2D97 | Starter/Generator Phase Z Current Sensor Circuit Low | Fuel Metering | Medium |
| P2D98 | Starter/Generator Phase X Current Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2D99 | Starter/Generator Phase Y Current Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2D9A | Starter/Generator Phase Z Current Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2D9B | Starter/Generator Phase U Current Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2D9C | Starter/Generator Phase V Current Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2D9D | Starter/Generator Phase W Current Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2D9E | High Voltage System Voltage Low | Fuel Metering | Medium |
| P2D9F | High Voltage System Voltage High | Fuel Metering | Medium |
| P2DA0 | High Voltage System Performance | Fuel Metering | Medium |
| P2DA1 | Gear Shift Control Module B Supply Voltage Low | Fuel Metering | Medium |
| P2DA2 | Gear Shift Control Module B Supply Voltage High | Fuel Metering | Medium |
| P2DA3 | Gear Shift Control Module B Overtemperature | Fuel Metering | Medium |
| P2DA4 | Coolant Heater A Internal Control Module Performance | Fuel Metering | Medium |
| P2DA5 | Coolant Heater A Supply Voltage Circuit | Fuel Metering | Medium |
| P2DA6 | Coolant Heater A Over Temperature | Fuel Metering | Medium |
| P2DA7 | Coolant Heater A Control Module System Voltage | Fuel Metering | Medium |
| P2DA8 | DC/AC Converter Control Module A Switch A Circuit | Fuel Metering | Medium |
| P2DA9 | DC/AC Converter Control Module A Switch A Circuit Range/Performance | Fuel Metering | Medium |
| P2DAA | DC/AC Converter Control Module A Switch B Circuit | Fuel Metering | Medium |
| P2DAB | DC/AC Converter Control Module A Switch B Circuit Range/Performance | Fuel Metering | Medium |
| P2DAC | Drive Motor A Temperature Sensor B Circuit | Fuel Metering | Medium |
| P2DAD | Drive Motor A Temperature Sensor B Circuit Range/Performance | Fuel Metering | Medium |
| P2DAE | Drive Motor A Temperature Sensor B Circuit Low | Fuel Metering | Medium |
| P2DAF | Drive Motor A Temperature Sensor B Circuit High | Fuel Metering | Medium |
| P2DB0 | Drive Motor A Temperature Sensor B Circuit Intermittent | Fuel Metering | Medium |
| P2DB1 | Drive Motor A Temperature Sensor C Circuit | 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.