Fuel System Codes
5,039 OBD-II diagnostic trouble codes in this category.
Showing page 42 of 51 (5,039 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P28C7 | Clutch A Motor Phase U-V-W Performance | Fuel Metering | Medium |
| P28C8 | Clutch A Pump Motor Performance | Fuel Metering | Medium |
| P28C9 | Clutch A Motor Overspeed | Fuel Metering | Medium |
| P28CA | Clutch A Motor Underspeed | Fuel Metering | Medium |
| P28CB | Clutch A Motor Position Sensor Circuit/Open | Fuel Metering | Medium |
| P28CC | Clutch A Motor Position Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P28CD | Clutch A Pressure Sensor Circuit/Open | Fuel Metering | Medium |
| P28CE | Clutch A Pressure Sensor Circuit Low | Fuel Metering | Medium |
| P28CF | Clutch A Pressure Sensor Circuit High | Fuel Metering | Medium |
| P28D0 | Clutch A Pressure Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P28D1 | Clutch A Motor Driver Current/Temperature Too High | Fuel Metering | Medium |
| P28D2 | Clutch B Motor Phase U-V-W Circuit Low | Fuel Metering | Medium |
| P28D3 | Clutch B Motor Phase U-V-W Circuit High | Fuel Metering | Medium |
| P28D4 | Clutch B Motor Phase U-V-W Circuit/Open | Fuel Metering | Medium |
| P28D5 | Clutch B Motor Phase U-V-W Performance | Fuel Metering | Medium |
| P28D6 | Clutch B Motor Driver Current/Temperature Too High | Fuel Metering | Medium |
| P28D7 | Clutch B Pump Motor Performance | Fuel Metering | Medium |
| P28D8 | Clutch B Motor Overspeed | Fuel Metering | Medium |
| P28D9 | Clutch B Motor Underspeed | Fuel Metering | Medium |
| P28DA | Clutch B Motor Position Sensor Circuit/Open | Fuel Metering | Medium |
| P28DB | Clutch B Motor Position Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P28DC | Clutch B Pressure Sensor Circuit/Open | Fuel Metering | Medium |
| P28DD | Clutch B Pressure Sensor Circuit Low | Fuel Metering | Medium |
| P28DE | Clutch B Pressure Sensor Circuit High | Fuel Metering | Medium |
| P28DF | Clutch B Pressure Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P28E0 | Shift Motor Phase U-V-W Circuit Low | Fuel Metering | Medium |
| P28E1 | Shift Motor Phase U-V-W Circuit High | Fuel Injection | Medium |
| P28EA | Shift Motor Position Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P28EB | Shift Motor Position Not Learned | Fuel Metering | Medium |
| P28EC | Shift Motor Position Sensor Exceeded Learning Limit | Fuel Metering | Medium |
| P28ED | Electric/Auxiliary Transmission Fluid Pump B Overspeed | Fuel Metering | Medium |
| P28EE | Electric/Auxiliary Transmission Fluid Pump B Underspeed | Fuel Metering | Medium |
| P28EF | Engine Disconnect Clutch Actuator Performance/Stuck Off | Fuel Metering | Medium |
| P28F0 | Engine Disconnect Clutch Actuator Stuck On | Fuel Metering | Medium |
| P28F1 | Engine Disconnect Clutch Pressure Sensor Circuit | Fuel Metering | Medium |
| P28F2 | Engine Disconnect Clutch Pressure Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P28F3 | Engine Disconnect Clutch Pressure Sensor Circuit Low | Fuel Metering | Medium |
| P28F4 | Engine Disconnect Clutch Pressure Sensor Circuit High | Fuel Metering | Medium |
| P28F5 | Engine Disconnect Clutch Pressure Sensor Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P28F6 | Engine Disconnect Clutch Actuator Circuit Intermittent | Fuel Metering | Medium |
| P28F7 | Exhaust Pressure Too High Bank 1 | Fuel Metering | Medium |
| P28F8 | Exhaust Pressure Too High Bank 2 | Fuel Metering | Medium |
| P28F9 | Exhaust Pressure Too Low Bank 1 | Fuel Metering | Medium |
| P28FA | Exhaust Pressure Too Low Bank 2 | Fuel Metering | Medium |
| P2A0A | Manifold Absolute Pressure Sensor B Circuit | Fuel Metering | Medium |
| P2A0B | Manifold Absolute Pressure Sensor B Circuit Range/Performance | Fuel Metering | Medium |
| P2A0C | Manifold Absolute Pressure Sensor B Circuit Low | Fuel Metering | Medium |
| P2A0D | Manifold Absolute Pressure Sensor B Circuit High | Fuel Metering | Medium |
| P2A0E | Manifold Absolute Pressure Sensor B Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2A0F | Fuel Supply Heater Performance | Fuel Metering | Medium |
| P2A22 | Alternative Fuel Tank Shutoff Valve B Control Circuit/Open | Fuel Metering | Medium |
| P2A23 | Alternative Fuel Tank Shutoff Valve B Control Circuit Performance/Stuck Off | Fuel Metering | Medium |
| P2A24 | Alternative Fuel Tank Shutoff Valve B Control Circuit Low | Fuel Metering | Medium |
| P2A25 | Alternative Fuel Tank Shutoff Valve B Control Circuit High | Fuel Metering | Medium |
| P2A26 | Alternative Fuel Tank Shutoff Valve C Control Circuit/Open | Fuel Metering | Medium |
| P2A27 | Alternative Fuel Tank Shutoff Valve C Control Circuit Performance/Stuck Off | Fuel Metering | Medium |
| P2A28 | Alternative Fuel Tank Shutoff Valve C Control Circuit Low | Fuel Metering | Medium |
| P2A29 | Alternative Fuel Tank Shutoff Valve C Control Circuit High | Fuel Metering | Medium |
| P2A2A | Alternative Fuel Tank Shutoff Valve D Control Circuit/Open | Fuel Metering | Medium |
| P2A2B | Alternative Fuel Tank Shutoff Valve D Control Circuit Performance/Stuck Off | Fuel Metering | Medium |
| P2A2C | Alternative Fuel Tank Shutoff Valve D Control Circuit Low | Fuel Metering | Medium |
| P2A2D | Alternative Fuel Tank Shutoff Valve D Control Circuit High | Fuel Metering | Medium |
| P2A2E | Alternative Fuel Tank Shutoff Valve E Control Circuit/Open | Fuel Metering | Medium |
| P2A2F | Alternative Fuel Tank Shutoff Valve E Control Circuit Performance/Stuck Off | Fuel Metering | Medium |
| P2A30 | Alternative Fuel Tank Shutoff Valve E Control Circuit Low | Fuel Metering | Medium |
| P2A31 | Alternative Fuel Tank Shutoff Valve E Control Circuit High | Fuel Metering | Medium |
| P2A32 | AFCM Power Relay Control Circuit/Open | Fuel Metering | Medium |
| P2A33 | AFCM Power Relay Control Circuit Low | Fuel Metering | Medium |
| P2A34 | AFCM Power Relay Control Circuit High | Fuel Metering | Medium |
| P2A35 | AFCM Power Relay Sense Circuit | Fuel Metering | Medium |
| P2A36 | AFCM Power Relay Sense Circuit Low | Fuel Metering | Medium |
| P2A37 | AFCM Power Relay Sense Circuit High | Fuel Metering | Medium |
| P2A3E | Alternative Fuel Delivery Error | Fuel Metering | Medium |
| P2A3F | Excessive Time to Enter Alternative Fuel Control | Fuel Metering | Medium |
| P2A40 | Alternative Fuel System - Injector Leakage to Rail Detected | Fuel Metering | Medium |
| P2A41 | Alternative Fuel Tank B Pressure Sensor Circuit | Fuel Metering | Medium |
| P2A42 | Alternative Fuel Tank B Pressure Sensor Range/Performance | Fuel Metering | Medium |
| P2A43 | Alternative Fuel Tank B Pressure Sensor Circuit Low | Fuel Metering | Medium |
| P2A44 | Alternative Fuel Tank B Pressure Sensor Circuit High | Fuel Metering | Medium |
| P2A45 | Alternative Fuel Tank B Pressure Sensor Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2A46 | Alternative Fuel Tank C Pressure Sensor Circuit | Fuel Metering | Medium |
| P2A47 | Alternative Fuel Tank C Pressure Sensor Range/Performance | Fuel Metering | Medium |
| P2A48 | Alternative Fuel Tank C Pressure Sensor Circuit Low | Fuel Metering | Medium |
| P2A49 | Alternative Fuel Tank C Pressure Sensor Circuit High | Fuel Metering | Medium |
| P2A4A | Alternative Fuel Tank C Pressure Sensor Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2A4B | Alternative Fuel Temperature Sensor Circuit | Fuel Metering | Medium |
| P2A4C | Alternative Fuel Temperature Sensor Range/Performance | Fuel Metering | Medium |
| P2A4D | Alternative Fuel Temperature Sensor Circuit Low | Fuel Metering | Medium |
| P2A4E | Alternative Fuel Temperature Sensor Circuit High | Fuel Metering | Medium |
| P2A4F | Alternative Fuel Temperature Sensor Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2A50 | Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit | Fuel Metering | Medium |
| P2A51 | Alternative Fuel Vaporizer A Outlet Temperature Sensor Range/Performance | Fuel Metering | Medium |
| P2A52 | Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit Low | Fuel Metering | Medium |
| P2A53 | Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit High | Fuel Metering | Medium |
| P2A54 | Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2A55 | Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit | Fuel Metering | Medium |
| P2A56 | Alternative Fuel Vaporizer B Outlet Temperature Sensor Range/Performance | Fuel Metering | Medium |
| P2A57 | Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Low | Fuel Metering | Medium |
| P2A58 | Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit High | Fuel Metering | Medium |
| P2A59 | Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Intermittent/Erratic | 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.