Fuel System Codes
5,039 OBD-II diagnostic trouble codes in this category.
Showing page 50 of 51 (5,039 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P2DB2 | Drive Motor A Temperature Sensor C Circuit Range/Performance | Fuel Metering | Medium |
| P2DB3 | Drive Motor A Temperature Sensor C Circuit Low | Fuel Metering | Medium |
| P2DB4 | Drive Motor A Temperature Sensor C Circuit High | Fuel Metering | Medium |
| P2DB5 | Drive Motor A Temperature Sensor C Circuit Intermittent | Fuel Metering | Medium |
| P2DB6 | Battery Charger B Cooling System Performance | Fuel Metering | Medium |
| P2DB7 | Battery Charging System B High Voltage Interlock Circuit/Open | Fuel Metering | Medium |
| P2DB8 | Battery Charging System B High Voltage Interlock Circuit Performance | Fuel Metering | Medium |
| P2DB9 | Battery Charging System B High Voltage Interlock Circuit Low | Fuel Metering | Medium |
| P2DBA | Battery Charging System B High Voltage Interlock Circuit High | Fuel Metering | Medium |
| P2DBB | Battery Charging System B High Voltage Interlock Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2DBC | Battery Charger B Coupler Lock Position Sensor Circuit | Fuel Metering | Medium |
| P2DBD | Battery Charger B Coupler Lock Position Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P2DBE | Battery Charger B Coupler Lock Position Sensor Circuit Low | Fuel Metering | Medium |
| P2DBF | Battery Charger B Coupler Lock Position Sensor Circuit High | Fuel Metering | Medium |
| P2DC0 | Battery Charger B Coupler Lock Position Sensor Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2DC1 | Starter/Generator Phase X Current Sensor Circuit | Fuel Metering | Medium |
| P2DC2 | Starter/Generator Phase X Current Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P2DC3 | Starter/Generator Phase Y Current Sensor Circuit | Fuel Metering | Medium |
| P2DC4 | Starter/Generator Phase Y Current Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P2DC5 | Starter/Generator Phase Z Current Sensor Circuit | Fuel Metering | Medium |
| P2DC6 | Starter/Generator Phase Z Current Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P2DC7 | Starter/Generator Excitation Current | Fuel Metering | Medium |
| P2DC8 | Starter/Generator Excitation Current Low | Fuel Metering | Medium |
| P2DC9 | Starter/Generator Excitation Current High | Fuel Metering | Medium |
| P2DCA | Starter/Generator Excitation Current Intermittent | Fuel Metering | Medium |
| P2DCB | Starter/Generator Phase X-Y-Z Current Sensor Correlation | Fuel Metering | Medium |
| P2DCC | Starter/Generator Position Sensor Correlation | Fuel Metering | Medium |
| P2DCD | Particulate Filter B Incorrect | Fuel Metering | Medium |
| P2DCE | Control Pilot Charging Switch B Circuit/Open | Fuel Metering | Medium |
| P2DCF | Control Pilot Charging Switch B Range/Performance | Fuel Metering | Medium |
| P2DD0 | Control Pilot Charging Switch B Circuit Low | Fuel Metering | Medium |
| P2DD1 | Control Pilot Charging Switch B Circuit High | Fuel Metering | Medium |
| P2DD2 | Control Pilot Charging Switch B Intermittent/Erratic | Fuel Metering | Medium |
| P2DD3 | Control Pilot Charging Switch B Stuck Off | Fuel Metering | Medium |
| P2DD4 | Control Pilot Charging Switch B Stuck On | Fuel Metering | Medium |
| P2DD5 | Fuel Injection Quantity B Lower Than Expected | Fuel Metering | Medium |
| P2DD6 | Fuel Injection Quantity B Higher Than Expected | Fuel Metering | Medium |
| P2DD7 | Cold Start Fuel Injection Quantity B Lower Than Expected | Fuel Metering | Medium |
| P2DD8 | Cold Start Fuel Injection Quantity B Higher Than Expected | Fuel Metering | Medium |
| P2DD9 | EVAP System Leak Detection Pump Control Circuit Performance | Fuel Metering | Medium |
| P2DDA | EVAP System Leak Detection Pump Performance/Stuck Off | Fuel Metering | Medium |
| P2DDB | EVAP System Leak Detection Pump Stuck On | Fuel Metering | Medium |
| P2DDC | Fuel Injection Quantity C Lower Than Expected | Fuel Metering | Medium |
| P2DDD | Fuel Injection Quantity C Higher Than Expected | Fuel Metering | Medium |
| P2DDE | Fuel Injection Quantity D Lower Than Expected | Fuel Metering | Medium |
| P2DDF | Fuel Injection Quantity D Higher Than Expected | Fuel Metering | Medium |
| P2DE0 | Cold Start Fuel Injection Quantity C Lower Than Expected | Fuel Metering | Medium |
| P2DE1 | Cold Start Fuel Injection Quantity C Higher Than Expected | Fuel Metering | Medium |
| P2DE2 | Cold Start Fuel Injection Quantity D Lower Than Expected | Fuel Metering | Medium |
| P2DE3 | Cold Start Fuel Injection Quantity D Higher Than Expected | Fuel Metering | Medium |
| P2DE4 | Drive Motor A Clutch Stuck Engaged | Fuel Metering | Medium |
| P2DE5 | Drive Motor A Clutch Stuck Disengaged | Fuel Metering | Medium |
| P2DE6 | Drive Motor A Clutch Actuator Performance | Fuel Metering | Medium |
| P2DE7 | Cold Start Engine Coolant Bypass Valve C Range/Performance | Fuel Metering | Medium |
| P2DE8 | Cold Start Engine Coolant Bypass Valve D Stuck Open | Fuel Metering | Medium |
| P2DE9 | Cold Start Engine Coolant Pump Underspeed | Fuel Metering | Medium |
| P2DEA | Cylinder 1 Intake Valve Lift Range/Performance | Fuel Metering | Medium |
| P2DEB | Cylinder 2 Intake Valve Lift Range/Performance | Fuel Metering | Medium |
| P2DEC | Cylinder 3 Intake Valve Lift Range/Performance | Fuel Metering | Medium |
| P2DED | Cylinder 4 Intake Valve Lift Range/Performance | Fuel Metering | Medium |
| P2DEE | Cylinder 5 Intake Valve Lift Range/Performance | Fuel Metering | Medium |
| P2DEF | Cylinder 6 Intake Valve Lift Range/Performance | Fuel Metering | Medium |
| P2DF0 | Intake Valve Lift Range/Performance Bank 1 | Fuel Metering | Medium |
| P2DF1 | Intake Valve Lift Range/Performance Bank 2 | Fuel Metering | Medium |
| P2DF2 | Intake Valve Lift System Range/Performance | Fuel Metering | Medium |
| P2DF3 | Engine Disconnect Clutch Actuator Position Not Learned | Fuel Metering | Medium |
| P2DF4 | Coolant Pump E Control Circuit/Open | Fuel Metering | Medium |
| P2DF5 | Coolant Pump E Control Circuit Low | Fuel Metering | Medium |
| P2DF6 | Coolant Pump E Control Circuit High | Fuel Metering | Medium |
| P2DF7 | Coolant Pump E Overspeed/Air in System | Fuel Metering | Medium |
| P2DF8 | Coolant Pump E Underspeed | Fuel Metering | Medium |
| P2DF9 | Coolant Pump E Stuck/Stalled | Fuel Metering | Medium |
| P2DFA | Coolant Pump E Supply Voltage Circuit | Fuel Metering | Medium |
| P2DFB | Coolant Pump E Control Module Overtemperature | Fuel Metering | Medium |
| P2DFC | Hybrid/EV Battery Coolant Leak Detected | Fuel Metering | Medium |
| P2DFD | EVAP System Purge Pump Performance | Fuel Metering | Medium |
| P2E00 | Gear Lever Position Sensor A Circuit | Fuel Metering | Medium |
| P2E01 | Gear Lever Position Sensor A Range/Performance | Fuel Metering | Medium |
| P2E02 | Gear Lever Position Sensor A Circuit Low | Fuel Injection | Medium |
| P2E0A | Gear Lever Position Sensor C Circuit Low | Fuel Metering | Medium |
| P2E0B | Gear Lever Position Sensor C Circuit High | Fuel Metering | Medium |
| P2E0C | Gear Lever Position Sensor D Circuit | Fuel Metering | Medium |
| P2E0D | Gear Lever Position Sensor D Range/Performance | Fuel Metering | Medium |
| P2E0E | Gear Lever Position Sensor D Circuit Low | Fuel Metering | Medium |
| P2E0F | Gear Lever Position Sensor D Circuit High | Fuel Metering | Medium |
| P2E1A | Drive Motor A Inverter Voltage Sensor A/B Correlation | Fuel Metering | Medium |
| P2E1B | Drive Motor A Phase X Current Sensor Circuit | Fuel Metering | Medium |
| P2E1C | Drive Motor A Phase X Current Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P2E1D | Drive Motor A Phase X Current Sensor Circuit Low | Fuel Metering | Medium |
| P2E1E | Drive Motor A Phase X Current Sensor Circuit High | Fuel Metering | Medium |
| P2E1F | Drive Motor A Phase Y Current Sensor Circuit | Fuel Metering | Medium |
| P2E2A | Drive Motor A Excitation Current Sensor Circuit High Voltage | Fuel Injection | Medium |
| P2E2B | Drive Motor A Excitation Current Too High | Fuel Injection | Medium |
| P2E2C | Battery Charger A Module Supply Voltage Performance | Fuel Injection | Medium |
| P2E2D | Battery Charger A Module Supply Voltage Low | Fuel Injection | Medium |
| P2E2E | Battery Charger A Module Supply Voltage High | Fuel Injection | Medium |
| P2E2F | Battery Charger B Module Supply Voltage Performance | Fuel Injection | Medium |
| P2E58 | Alternative Fuel Random/Multiple Cylinder Misfire Detected | Fuel System | Medium |
| P2E59 | Cylinder 1 Alternative Fuel Misfire Detected | Fuel System | Medium |
| P2E5A | Cylinder 2 Alternative Fuel Misfire Detected | Fuel System | 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.