Fuel System Codes
5,039 OBD-II diagnostic trouble codes in this category.
Showing page 8 of 51 (5,039 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P051F | PCV Filter Restriction | Fuel Metering | Medium |
| P052E | PCV Regulator Valve Performance | Fuel Metering | Medium |
| P052F | Glow Plug Control Module 1 System Voltage | Fuel Metering | Medium |
| P053A | PCV Heater A Control Circuit /Open | Fuel Metering | Medium |
| P053B | PCV Heater A Control Circuit Low | Fuel Metering | Medium |
| P053C | PCV Heater A Control Circuit High | Fuel Metering | Medium |
| P053D | PCV Heater A Performance | Fuel Metering | Medium |
| P053F | Cold Start Fuel Pressure Performance Bank 1 | Fuel Metering | Medium |
| P054E | Idle Control System - Fuel Quantity Lower Than Expected | Fuel Metering | Medium |
| P054F | Idle Control System - Fuel Quantity Higher Than Expected | Fuel Metering | Medium |
| P055A | Engine Oil Pressure Sensor/Switch B Circuit | Fuel Metering | Medium |
| P055B | Engine Oil Pressure Sensor/Switch B Range/Performance | Fuel Metering | Medium |
| P055C | Engine Oil Pressure Sensor/Switch B Low | Fuel Metering | Medium |
| P055D | Engine Oil Pressure Sensor/Switch B High | Fuel Metering | Medium |
| P055F | Engine Oil Pressure Out of Range | Fuel Metering | Medium |
| P056A | Cruise Control Increase Distance Signal | Fuel Metering | Medium |
| P056B | Cruise Control Decrease Distance Signal | Fuel Metering | Medium |
| P056C | Cruise Control Cancel Signal | Fuel Metering | Medium |
| P056D | Reductant Control Module System Voltage | Fuel Metering | Medium |
| P057A | Brake Pedal Position Sensor A Circuit/Open | Fuel Metering | Medium |
| P057B | Brake Pedal Position Sensor A Circuit Range/Performance | Fuel Metering | Medium |
| P057C | Brake Pedal Position Sensor A Circuit Low | Fuel Metering | Medium |
| P057D | Brake Pedal Position Sensor A Circuit High | Fuel Metering | Medium |
| P057E | Brake Pedal Position Sensor A Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P057F | Battery A State of Charge Performance | Fuel Metering | Medium |
| P058A | Battery Monitor Module Performance | Fuel Metering | Medium |
| P058B | Battery Monitor Module Current Monitoring Performance | Fuel Metering | Medium |
| P058C | Battery Monitor Module Temperature Monitoring Performance | Fuel Metering | Medium |
| P058D | Battery Monitor Module Voltage Monitoring Performance | Fuel Metering | Medium |
| P058E | Battery Monitor Module Temperature Too High | Fuel Metering | Medium |
| P058F | Battery Monitor Module Temperature Too Low | Fuel Metering | Medium |
| P059A | Active Grille Air Shutter A Position Sensor Circuit | Fuel Metering | Medium |
| P059B | Active Grille Air Shutter A Position Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P059C | Active Grille Air Shutter A Position Sensor Circuit High | Fuel Metering | Medium |
| P059D | Active Grille Air Shutter A Position Sensor Circuit Low | Fuel Metering | Medium |
| P059E | Active Grille Air Shutter A Position Sensor Circuit Intermittent | Fuel Metering | Medium |
| P059F | Active Grille Air Shutter A Performance/Stuck Off | Fuel Metering | Medium |
| P05A0 | Active Grille Air Shutter A Stuck On | Fuel Metering | Medium |
| P05A1 | Active Grille Air Shutter A Position Sensor Minimum/Maximum Stop Performance | Fuel Metering | Medium |
| P05A2 | Active Grille Air Shutter A Control Circuit/Open | Fuel Metering | Medium |
| P05A3 | Active Grille Air Shutter A Control Circuit Range/Performance | Fuel Metering | Medium |
| P05A4 | Active Grille Air Shutter A Control Circuit High | Fuel Metering | Medium |
| P05A5 | Active Grille Air Shutter A Control Circuit Low | Fuel Metering | Medium |
| P05A6 | Active Grille Air Shutter A Supply Voltage Circuit/Open | Fuel Metering | Medium |
| P05A7 | Active Grille Air Shutter A Supply Voltage Circuit Low | Fuel Metering | Medium |
| P05A8 | Active Grille Air Shutter A Supply Voltage Circuit High | Fuel Metering | Medium |
| P05A9 | Active Grille Air Shutter B Position Sensor Circuit | Fuel Metering | Medium |
| P05AA | Active Grille Air Shutter B Position Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P05AB | Active Grille Air Shutter B Position Sensor Circuit High | Fuel Metering | Medium |
| P05AC | Active Grille Air Shutter B Position Sensor Circuit Low | Fuel Metering | Medium |
| P05AD | Active Grille Air Shutter B Position Sensor Circuit Intermittent | Fuel Metering | Medium |
| P05AE | Active Grille Air Shutter B Performance/Stuck Off | Fuel Metering | Medium |
| P05AF | Active Grille Air Shutter B Stuck On | Fuel Metering | Medium |
| P05B0 | Active Grille Air Shutter B Position Sensor Minimum/Maximum Stop Performance | Fuel Metering | Medium |
| P05B1 | Active Grille Air Shutter B Control Circuit/Open | Fuel Metering | Medium |
| P05B2 | Active Grille Air Shutter B Control Circuit Range/Performance | Fuel Metering | Medium |
| P05B3 | Active Grille Air Shutter B Control Circuit High | Fuel Metering | Medium |
| P05B4 | Active Grille Air Shutter B Control Circuit Low | Fuel Metering | Medium |
| P05B5 | Active Grille Air Shutter B Supply Voltage Circuit/Open | Fuel Metering | Medium |
| P05B6 | Active Grille Air Shutter B Supply Voltage Circuit Low | Fuel Metering | Medium |
| P05B7 | Active Grille Air Shutter B Supply Voltage Circuit High | Fuel Metering | Medium |
| P05B8 | Restraint Deployment Signal Circuit/Open | Fuel Metering | Medium |
| P05B9 | Restraint Deployment Signal Circuit Low | Fuel Metering | Medium |
| P05BA | Restraint Deployment Signal Circuit High | Fuel Metering | Medium |
| P05BB | Restraints Deployed | Fuel Metering | Medium |
| P05BC | Stop-Start Mode Switch Circuit/Open | Fuel Metering | Medium |
| P05BD | Stop-Start Mode Switch Circuit Range/Performance | Fuel Metering | Medium |
| P05BE | Stop-Start Mode Switch Circuit Low | Fuel Metering | Medium |
| P05BF | Stop-Start Mode Switch Circuit High | Fuel Metering | Medium |
| P05C0 | Active Grille Air Shutter Module A Over Temperature | Fuel Metering | Medium |
| P05C1 | Active Grille Air Shutter Module B Over Temperature | Fuel Metering | Medium |
| P05C2 | Engine Coolant Pressure Sensor Circuit | Fuel Metering | Medium |
| P05C3 | Engine Coolant Pressure Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P05C4 | Engine Coolant Pressure Sensor Circuit Low | Fuel Metering | Medium |
| P05C5 | Engine Coolant Pressure Sensor Circuit High | Fuel Metering | Medium |
| P05C6 | Engine Coolant Pressure Sensor Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P05C7 | Economy Mode Switch Circuit/Open | Fuel Metering | Medium |
| P05C8 | Economy Mode Switch Circuit Range/Performance | Fuel Metering | Medium |
| P05C9 | Economy Mode Switch Circuit Low | Fuel Metering | Medium |
| P05CA | Economy Mode Switch Circuit High | Fuel Metering | Medium |
| P05CB | Vehicle Hardware Incompatibility | Fuel Metering | Medium |
| P05D0 | Driver Mode Select Switch A Circuit | Fuel Metering | Medium |
| P05D1 | Driver Mode Select Switch A Circuit Low | Fuel Metering | Medium |
| P05D2 | Driver Mode Select Switch A Circuit High | Fuel Metering | Medium |
| P05D3 | Driver Mode Select Switch A Range/Performance | Fuel Metering | Medium |
| P05D4 | Driver Mode Select Switch B Circuit | Fuel Metering | Medium |
| P05D5 | Driver Mode Select Switch B Circuit Low | Fuel Metering | Medium |
| P05D6 | Driver Mode Select Switch B Circuit High | Fuel Metering | Medium |
| P05D7 | Driver Mode Select Switch B Range/Performance | Fuel Metering | Medium |
| P05D8 | PCV Regulator Valve Control Circuit/Open | Fuel Metering | Medium |
| P05D9 | PCV Regulator Valve Control Circuit Low | Fuel Metering | Medium |
| P05DA | PCV Regulator Valve Control Circuit High | Fuel Metering | Medium |
| P05DB | Brake Pedal Position Sensor B Circuit/Open | Fuel Metering | Medium |
| P05DC | Brake Pedal Position Sensor B Circuit Range/Performance | Fuel Metering | Medium |
| P05DD | Brake Pedal Position Sensor B Circuit Low | Fuel Metering | Medium |
| P05DE | Brake Pedal Position Sensor B Circuit High | Fuel Metering | Medium |
| P05DF | Brake Pedal Position Sensor B Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P05E0 | Brake Pedal Position Sensor A/B Correlation | Fuel Metering | Medium |
| P05E1 | A/C Refrigerant Pressure Sensor A Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P05EA | Engine Oil Bypass Valve Control Circuit High | 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.