Fuel System Codes
5,039 OBD-II diagnostic trouble codes in this category.
Showing page 51 of 51 (5,039 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P2E5B | Cylinder 3 Alternative Fuel Misfire Detected | Fuel System | Medium |
| P2E5C | Cylinder 4 Alternative Fuel Misfire Detected | Fuel System | Medium |
| P2E5D | Cylinder 5 Alternative Fuel Misfire Detected | Fuel System | Medium |
| P2E5E | Cylinder 6 Alternative Fuel Misfire Detected | Fuel System | Medium |
| P2E5F | Cylinder 7 Alternative Fuel Misfire Detected | Fuel System | Medium |
| P2E60 | Cylinder 8 Alternative Fuel Misfire Detected | Fuel System | Medium |
| P2E61 | Alternative Fuel Misfire Detected With Low Fuel | Fuel System | Medium |
| P2E83 | Fuel Rail Pressure Performance - Engine Off | Fuel System | Medium |
| P2EA0 | Charge Port Door B Unlock Control Circuit High | Fuel Metering | Medium |
| P2EA1 | Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 6 | Fuel Metering | Medium |
| P2EA2 | Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 6 | Fuel Metering | Medium |
| P2EA3 | Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 6 | Fuel Metering | Medium |
| P2EA5 | Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 6 | Fuel Metering | Medium |
| P2EA7 | DC/AC Converter A Input Voltage Too Low | Fuel Metering | Medium |
| P2EA8 | DC/AC Converter A Input Voltage Too High | Fuel Metering | Medium |
| P2EA9 | DC/AC Converter A Over Temperature | Fuel Metering | Medium |
| P2EAA | Active Radiator Air Flow Control Module A Control Circuit Performance | Fuel Metering | Medium |
| P2EAB | Active Radiator Air Flow Control Module A Over Temperature | Fuel Metering | Medium |
| P2EAC | Active Radiator Air Flow Control Module A Performance | Fuel Metering | Medium |
| P2EAD | Reductant Metering Unit 2 Performance | Fuel Metering | Medium |
| P2EAE | Reductant Injection Valve Circuit Range/Performance Bank 1 Unit 2 | Fuel Metering | Medium |
| P2EAF | Reductant Injection Valve Stuck Closed Bank 1 Unit 2 | Fuel Metering | Medium |
| P2EB0 | Throttle Valve Intake Air Pressure Sensor Circuit | Fuel Metering | Medium |
| P2EB1 | Throttle Valve Intake Air Pressure Sensor Circuit Low | Fuel Metering | Medium |
| P2EB2 | Throttle Valve Intake Air Pressure Sensor Circuit High | Fuel Metering | Medium |
| P2EB3 | Throttle Valve Intake Air Pressure Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P2EB4 | Hybrid/EV Battery Inductive Charger High Voltage Interlock Circuit/Open | Fuel Metering | Medium |
| P2EB5 | Hybrid/EV Battery Inductive Charger Input Voltage Low | Fuel Metering | Medium |
| P2EB6 | Hybrid/EV Battery Inductive Charger Input Voltage High | Fuel Metering | Medium |
| P2EB7 | Replace 12V Battery | Fuel Metering | Medium |
| P2EB9 | Reductant Injection Valve Circuit Range/Performance Bank 2 Unit 2 | Fuel Metering | Medium |
| P2EBF | Battery Charging Mode Switch Stuck | Fuel Metering | Medium |
| P3000 | Manufacturer Controlled DTC | Fuel System | Medium |
| P3400 | P34C8 | Fuel System | Medium |
| P3497 | Cylinder Deactivation System Bank 2 | Fuel System | Medium |
| P34A0 | Cylinder 9 Deactivation/Intake Valve Performance | Fuel Metering | Medium |
| P34A1 | Cylinder 10 Deactivation/Intake Valve Performance | Fuel Metering | Medium |
| P34A2 | Cylinder 11 Deactivation/Intake Valve Performance | Fuel Metering | Medium |
| P34A3 | Cylinder 12 Deactivation/Intake Valve Performance | 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.