Fuel System Codes
5,039 OBD-II diagnostic trouble codes in this category.
Showing page 1 of 51 (5,039 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P0001 | Fuel Volume Regulator Control Circuit/Open | Fuel Pressure | Medium |
| P0002 | Fuel Volume Regulator Control Circuit Range/Performance | Fuel Pressure | Medium |
| P0003 | Fuel Volume Regulator Control Circuit Low | Fuel Pressure | Medium |
| P0004 | Fuel Volume Regulator Control Circuit High | Fuel Pressure | Medium |
| P0005 | Fuel Shutoff Valve A Control Circuit/Open | Fuel Shutoff Valve | Medium |
| P0006 | Fuel Shutoff Valve A Control Circuit Low | Fuel Shutoff Valve | Medium |
| P0007 | Fuel Shutoff Valve A Control Circuit High | Fuel Shutoff Valve | Medium |
| P000E | Fuel Volume Regulator Control Exceeded Learning Limit | Fuel Metering | Medium |
| P000F | Fuel System Over Pressure Relief Valve Activated | Fuel Metering | Medium |
| P0010 | A Camshaft Position Actuator Circuit (Bank 1) | Variable Valve Timing | Medium |
| P0011 | A Camshaft Position - Timing Over-Advanced (Bank 1) | Variable Valve Timing | Medium |
| P0012 | A Camshaft Position - Timing Over-Retarded (Bank 1) | Variable Valve Timing | Medium |
| P0013 | B Camshaft Position Actuator Circuit (Bank 1) | Variable Valve Timing | Medium |
| P0014 | B Camshaft Position - Timing Over-Advanced (Bank 1) | Variable Valve Timing | Medium |
| P0015 | B Camshaft Position - Timing Over-Retarded (Bank 1) | Variable Valve Timing | Medium |
| P0020 | A Camshaft Position Actuator Circuit (Bank 2) | Variable Valve Timing | Medium |
| P0021 | A Camshaft Position - Timing Over-Advanced (Bank 2) | Variable Valve Timing | Medium |
| P0022 | A Camshaft Position - Timing Over-Retarded (Bank 2) | Variable Valve Timing | Medium |
| P0026 | Intake Valve Control Solenoid Circuit Range/Performance Bank 1 | Valve Control | Medium |
| P0027 | Exhaust Valve Control Solenoid Circuit Range/Performance Bank 1 | Valve Control | Medium |
| P0028 | Intake Valve Control Solenoid Circuit Range/Performance Bank 2 | Valve Control | Medium |
| P0029 | Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2 | Valve Control | Medium |
| P0065 | Air Assisted Injector Control Range/Performance | Fuel Injection | Medium |
| P0066 | Air Assisted Injector Control Circuit/Low | Fuel Injection | Medium |
| P0067 | Air Assisted Injector Control Circuit/High | Fuel Injection | Medium |
| P006A | MAP - Mass or Volume Air Flow Correlation Bank 1 | Fuel Metering | Medium |
| P006B | MAP - Exhaust Pressure Correlation | Fuel Metering | Medium |
| P0075 | Intake Valve Control Solenoid Circuit Bank 1 | Valve Control | Medium |
| P0076 | Intake Valve Control Solenoid Circuit Low Bank 1 | Valve Control | Medium |
| P0077 | Intake Valve Control Solenoid Circuit High Bank 1 | Valve Control | Medium |
| P0078 | Exhaust Valve Control Solenoid Circuit Bank 1 | Valve Control | Medium |
| P0079 | Exhaust Valve Control Solenoid Circuit Low Bank 1 | Valve Control | Medium |
| P007A | Charge Air Cooler Temperature Sensor Circuit Bank 1 | Fuel Metering | Medium |
| P007B | Charge Air Cooler Temperature Sensor Circuit Range/Performance Bank 1 | Fuel Metering | Medium |
| P007C | Charge Air Cooler Temperature Sensor Circuit Low Bank 1 | Fuel Metering | Medium |
| P007D | Charge Air Cooler Temperature Sensor Circuit High Bank 1 | Fuel Metering | Medium |
| P007E | Charge Air Cooler Temperature Sensor Circuit Intermittent/Erratic Bank 1 | Fuel Metering | Medium |
| P007F | Charge Air Cooler Temperature Sensor Bank1/Bank2 Correlation | Fuel Metering | Medium |
| P0080 | Exhaust Valve Control Solenoid Circuit High Bank 1 | Valve Control | Medium |
| P0081 | Intake Valve Control Solenoid Circuit Bank 2 | Valve Control | Medium |
| P0082 | Intake Valve Control Solenoid Circuit Low Bank 2 | Valve Control | Medium |
| P0083 | Intake Valve Control Solenoid Circuit High Bank 2 | Valve Control | Medium |
| P0084 | Exhaust Valve Control Solenoid Circuit Bank 2 | Valve Control | Medium |
| P0085 | Exhaust Valve Control Solenoid Circuit Low Bank 2 | Valve Control | Medium |
| P0086 | Exhaust Valve Control Solenoid Circuit High Bank 2 | Valve Control | Medium |
| P0087 | Fuel Rail/System Pressure Too Low | Fuel Pressure | High |
| P0088 | Fuel Rail/System Pressure Too High | Fuel Pressure | High |
| P0089 | Fuel Pressure Regulator Performance | Fuel Pressure | Medium |
| P008A | Low Pressure Fuel System Pressure - Too Low | Fuel Metering | Medium |
| P008B | Low Pressure Fuel System Pressure - Too High | Fuel Metering | Medium |
| P008C | Fuel Cooler Pump Control Circuit/Open | Fuel Metering | Medium |
| P008D | Fuel Cooler Pump Control Circuit Low | Fuel Metering | Medium |
| P008E | Fuel Cooler Pump Control Circuit High | Fuel Metering | Medium |
| P008F | Engine Coolant Temperature/Fuel Temperature Correlation | Fuel Metering | Medium |
| P0090 | Fuel Pressure Regulator Control Circuit | Fuel Pressure | Medium |
| P0091 | Fuel Pressure Regulator Control Circuit Low | Fuel Pressure | Medium |
| P0092 | Fuel Pressure Regulator Control Circuit High | Fuel Pressure | Medium |
| P0093 | Fuel System Leak Detected Large Leak | Fuel Delivery | Critical |
| P0094 | Fuel System Leak Detected Small Leak | Fuel Delivery | High |
| P009A | Intake Air Temperature/Ambient Air Temperature Correlation | Fuel Metering | Medium |
| P009B | Fuel Pressure Relief Control Circuit/Open | Fuel Metering | Medium |
| P009C | Fuel Pressure Relief Control Circuit Low | Fuel Metering | Medium |
| P009D | Fuel Pressure Relief Control Circuit High | Fuel Metering | Medium |
| P009E | Fuel Pressure Relief Control Performance/Stuck Off | Fuel Metering | Medium |
| P009F | Fuel Pressure Relief Control Stuck On | Fuel Metering | Medium |
| P00A0 | Charge Air Cooler Temperature Sensor Circuit Bank 2 | Fuel Metering | Medium |
| P00A1 | Charge Air Cooler Temperature Sensor Circuit Range/Performance Bank 2 | Fuel Metering | Medium |
| P00A2 | Charge Air Cooler Temperature Sensor Circuit Low Bank 2 | Fuel Metering | Medium |
| P00A3 | Charge Air Cooler Temperature Sensor Circuit High Bank 2 | Fuel Metering | Medium |
| P00A4 | Charge Air Cooler Temperature Sensor Circuit Intermittent/Erratic Bank 2 | Fuel Metering | Medium |
| P00A5 | Intake Air Temperature Sensor 2 Circuit Bank 2 | Fuel Metering | Medium |
| P00A6 | Intake Air Temperature Sensor 2 Circuit Range/Performance Bank 2 | Fuel Metering | Medium |
| P00A7 | Intake Air Temperature Sensor 2 Circuit Low Bank 2 | Fuel Metering | Medium |
| P00A8 | Intake Air Temperature Sensor 2 Circuit High Bank 2 | Fuel Metering | Medium |
| P00A9 | Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic Bank 2 | Fuel Metering | Medium |
| P00AA | Intake Air Temperature Sensor 1 Circuit Bank 2 | Fuel Metering | Medium |
| P00AB | Intake Air Temperature Sensor 1 Circuit Range/Performance Bank 2 | Fuel Metering | Medium |
| P00AC | Intake Air Temperature Sensor 1 Circuit Low Bank 2 | Fuel Metering | Medium |
| P00AD | Intake Air Temperature Sensor 1 Circuit High Bank 2 | Fuel Metering | Medium |
| P00AE | Intake Air Temperature Sensor 1 Circuit Intermittent Bank 2 | Fuel Metering | Medium |
| P00B1 | Radiator Coolant Temperature Sensor Circuit | Fuel Metering | Medium |
| P00B2 | Radiator Coolant Temperature Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P00B3 | Radiator Coolant Temperature Sensor Circuit Low | Fuel Metering | Medium |
| P00B4 | Radiator Coolant Temperature Sensor Circuit High | Fuel Metering | Medium |
| P00B5 | Radiator Coolant Temperature Sensor Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P00B6 | Radiator Coolant Temperature/Engine Coolant Temperature Correlation | Fuel Metering | Medium |
| P00B7 | Engine Coolant Flow Low/Performance | Fuel Metering | Medium |
| P00B8 | MAP - Mass or Volume Air Flow Correlation Bank 2 | Fuel Metering | Medium |
| P00B9 | Low Pressure Fuel System Pressure - Too Low. Low Ambient Temperature | Fuel Metering | Medium |
| P00BA | Low Fuel Pressure - Forced Limited Power | Fuel Metering | Medium |
| P00BB | Fuel Injector Insufficient Flow - Forced Limited Power | Fuel Metering | Medium |
| P00BC | Mass or Volume Air Flow A Circuit Range/Performance - Air Flow Too Low | Fuel Metering | Medium |
| P00BD | Mass or Volume Air Flow A Circuit Range/Performance - Air Flow Too High | Fuel Metering | Medium |
| P00BE | Mass or Volume Air Flow B Circuit Range/Performance - Air Flow Too Low | Fuel Metering | Medium |
| P00BF | Mass or Volume Air Flow B Circuit Range/Performance - Air Flow Too High | Fuel Metering | Medium |
| P00C7 | Intake Air Pressure Measurement System - Multiple Sensor Correlation Bank 1 | Fuel Metering | Medium |
| P00C8 | Fuel Pressure Regulator A Solenoid Supply Voltage Control Circuit/Open | Fuel Metering | Medium |
| P00C9 | Fuel Pressure Regulator A Solenoid Supply Voltage Control Circuit Low | Fuel Metering | Medium |
| P00CA | Fuel Pressure Regulator A Solenoid Supply Voltage Control Circuit High | Fuel Metering | Medium |
| P00CB | Fuel Volume Regulator Solenoid Supply Voltage Control Circuit/Open | 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.