Fuel System Codes
5,039 OBD-II diagnostic trouble codes in this category.
Showing page 2 of 51 (5,039 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P00CC | Fuel Volume Regulator Solenoid Supply Voltage Control Circuit Low | Fuel Metering | Medium |
| P00CD | Fuel Volume Regulator Solenoid Supply Voltage Control Circuit High | Fuel Metering | Medium |
| P00CE | Intake Air Temperature Measurement System - Multiple Sensor Correlation Bank 1 | Fuel Metering | Medium |
| P00D9 | Ambient Air Temperature Sensor Circuit B | Fuel Metering | Medium |
| P00DA | Ambient Air Temperature Sensor Circuit B Range/Performance | Fuel Metering | Medium |
| P00DB | Ambient Air Temperature Sensor Circuit B Low | Fuel Metering | Medium |
| P00DC | Ambient Air Temperature Sensor Circuit B High | Fuel Metering | Medium |
| P00DD | Ambient Air Temperature Sensor Circuit B Intermittent/Erratic | Fuel Metering | Medium |
| P00DE | Charge Air Cooler Coolant Temperature Sensor A Circuit | Fuel Metering | Medium |
| P00DF | Charge Air Cooler Coolant Temperature Sensor A Circuit Range/Performance | Fuel Metering | Medium |
| P00E0 | Charge Air Cooler Coolant Temperature Sensor A Circuit Low | Fuel Metering | Medium |
| P00E1 | Charge Air Cooler Coolant Temperature Sensor A Circuit High | Fuel Metering | Medium |
| P00E2 | Charge Air Cooler Coolant Temperature Sensor A Intermittent/Erratic | Fuel Metering | Medium |
| P00E3 | Exhaust Heat Exchanger Exhaust Bypass Valve A Stuck Open | Fuel Metering | Medium |
| P00E4 | Exhaust Heat Exchanger Exhaust Bypass Valve A Stuck Closed | Fuel Metering | Medium |
| P00E5 | Intake Air Temperature/Fuel Temperature Correlation | Fuel Metering | Medium |
| P00E6 | Intake Air Pressure Measurement System - Multiple Sensor Correlation Bank 2 | Fuel Metering | Medium |
| P00E7 | Intake Air Temperature Measurement System - Multiple Sensor Correlation Bank 2 | Fuel Metering | Medium |
| P00E8 | Intake Air Temperature Sensor 3 Circuit Bank 1 | Fuel Metering | Medium |
| P00E9 | Intake Air Temperature Sensor 3 Circuit Range/Performance Bank 1 | Fuel Metering | Medium |
| P00EA | Intake Air Temperature Sensor 3 Circuit Low Bank 1 | Fuel Metering | Medium |
| P00EB | Intake Air Temperature Sensor 3 Circuit High Bank 1 | Fuel Metering | Medium |
| P00EC | Intake Air Temperature Sensor 3 Circuit Intermittent/Erratic Bank 1 | Fuel Metering | Medium |
| P00ED | Intake Air Temperature Sensor 3 Circuit Bank 2 | Fuel Metering | Medium |
| P00EE | Intake Air Temperature Sensor 3 Circuit Range/Performance Bank 2 | Fuel Metering | Medium |
| P00EF | Intake Air Temperature Sensor 3 Circuit Low Bank 2 | Fuel Metering | Medium |
| P00F0 | Intake Air Temperature Sensor 3 Circuit High Bank 2 | Fuel Metering | Medium |
| P00F1 | Intake Air Temperature Sensor 3 Circuit Intermittent/Erratic Bank 2 | Fuel Metering | Medium |
| P00F2 | Humidity Sensor Circuit/Open | Fuel Metering | Medium |
| P00F3 | Humidity Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P00F4 | Humidity Sensor Circuit Low | Fuel Metering | Medium |
| P00F5 | Humidity Sensor Circuit High | Fuel Metering | Medium |
| P00F6 | Humidity Sensor Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P00FD | Battery B State of Charge Performance | Fuel Metering | Medium |
| P00FE | EVAP System Tank Vapor Line Restricted/Blocked | Fuel Metering | Medium |
| P00FF | Body Control Module Requested MIL Illumination | Fuel Metering | Medium |
| P010A | Mass or Volume Air Flow Sensor B Circuit | Fuel Metering | Medium |
| P010B | Mass or Volume Air Flow Sensor B Circuit Range/Performance | Fuel Metering | Medium |
| P010C | Mass or Volume Air Flow Sensor B Circuit Low | Fuel Metering | Medium |
| P010D | Mass or Volume Air Flow Sensor B Circuit High | Fuel Metering | Medium |
| P010E | Mass or Volume Air Flow Sensor B Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P010F | Mass or Volume Air Flow Sensor A/B Correlation | Fuel Metering | Medium |
| P011A | Engine Coolant Temperature Sensor 1/2 Correlation | Fuel Metering | Medium |
| P011B | Engine Coolant Temperature/Intake Air Temperature Correlation | Fuel Metering | Medium |
| P011C | Charge Air Cooler Temperature/Intake Air Temperature Correlation Bank 1 | Fuel Metering | Medium |
| P011D | Charge Air Cooler Temperature/Intake Air Temperature Correlation Bank 2 | Fuel Metering | Medium |
| P011E | Engine Coolant Temperature 1 / Ambient Air Temperature Correlation | Fuel Metering | Medium |
| P011F | Engine Coolant Temperature 2 / Ambient Air Temperature Correlation | Fuel Metering | Medium |
| P012F | Engine Coolant Temperature / Engine Oil Temperature Correlation | Fuel Metering | Medium |
| P0148 | Fuel Delivery Error | Fuel Delivery | High |
| P0149 | Fuel Timing Error | Fuel Timing | High |
| P015F | Excessive Time to Enter Closed Loop Cylinder Balance Control | Fuel Metering | Medium |
| P0168 | Fuel Temperature Too High | Fuel Temperature | Medium |
| P0169 | Incorrect Fuel Composition | Fuel Composition | Medium |
| P016A | Excessive Time To Enter Closed Loop Air/Fuel Ratio Control | Fuel Metering | Medium |
| P016B | Closed Loop Air/Fuel Ratio Control At Limit - System Too Rich | Fuel Metering | Medium |
| P016C | Closed Loop Air/Fuel Ratio Control At Limit - System Too Lean | Fuel Metering | Medium |
| P016D | Excessive Time To Enter Closed Loop Fuel Pressure Control | Fuel Metering | Medium |
| P016E | Closed Loop Fuel Pressure Control At Limit - Pressure Too High | Fuel Metering | Medium |
| P016F | Closed Loop Fuel Pressure Control At Limit - Pressure Too Low | Fuel Metering | Medium |
| P0170 | Fuel Trim Malfunction (Bank 1) | Fuel Trim | Medium |
| P0171 | System Too Lean (Bank 1) | Fuel Trim | Medium |
| P0172 | System Too Rich (Bank 1) | Fuel Trim | Medium |
| P0173 | Fuel Trim Malfunction (Bank 2) | Fuel Trim | Medium |
| P0174 | System Too Lean (Bank 2) | Fuel Trim | Medium |
| P0175 | System Too Rich (Bank 2) | Fuel Trim | Medium |
| P0176 | Fuel Composition Sensor Circuit Malfunction | Flex Fuel | Medium |
| P0177 | Fuel Composition Sensor Circuit Range/Performance | Fuel Composition | Medium |
| P0178 | Fuel Composition Sensor Circuit Low Input | Fuel Composition | Medium |
| P0179 | Fuel Composition Sensor Circuit High Input | Fuel Composition | Medium |
| P017A | Cylinder Head Temperature Sensor A Circuit | Fuel Metering | Medium |
| P017B | Cylinder Head Temperature Sensor A Range/Performance | Fuel Metering | Medium |
| P017C | Cylinder Head Temperature Sensor A Circuit Low | Fuel Metering | Medium |
| P017D | Cylinder Head Temperature Sensor A Circuit High | Fuel Metering | Medium |
| P017E | Cylinder Head Temperature Sensor A Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P017F | EVAP System Leak Detection Pump Module Air Filter Restricted | Fuel Metering | Medium |
| P0180 | Fuel Temperature Sensor A Circuit Malfunction | Fuel Temp | Low |
| P0181 | Fuel Temperature Sensor A Circuit Range/Performance | Fuel Temperature | Low |
| P0182 | Fuel Temperature Sensor A Circuit Low Input | Fuel Temperature | Low |
| P0183 | Fuel Temperature Sensor A Circuit High Input | Fuel Temperature | Low |
| P0184 | Fuel Temperature Sensor A Circuit Intermittent | Fuel Temperature | Low |
| P0185 | Fuel Temperature Sensor B Circuit | Fuel Temperature | Low |
| P0186 | Fuel Temperature Sensor B Circuit Range/Performance | Fuel Temperature | Low |
| P0187 | Fuel Temperature Sensor B Circuit Low Input | Fuel Temperature | Low |
| P0188 | Fuel Temperature Sensor B Circuit High Input | Fuel Temperature | Low |
| P0189 | Fuel Temperature Sensor B Circuit Intermittent | Fuel Temperature | Low |
| P018A | Fuel Pressure Sensor B Circuit | Fuel Metering | Medium |
| P018B | Fuel Pressure Sensor B Circuit Range/Performance | Fuel Metering | Medium |
| P018C | Fuel Pressure Sensor B Circuit Low | Fuel Metering | Medium |
| P018D | Fuel Pressure Sensor B Circuit High | Fuel Metering | Medium |
| P018E | Fuel Pressure Sensor B Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P018F | Fuel System Over Pressure Relief Valve Frequent Activation | Fuel Metering | Medium |
| P0190 | Fuel Rail Pressure Sensor Circuit Malfunction | Fuel Pressure | High |
| P0191 | Fuel Rail Pressure Sensor Circuit Range/Performance | Fuel Pressure | High |
| P0192 | Fuel Rail Pressure Sensor Circuit Low Input | Fuel Pressure | High |
| P0193 | Fuel Rail Pressure Sensor Circuit High Input | Fuel Pressure | High |
| P0194 | Fuel Rail Pressure Sensor Circuit Intermittent | Fuel Pressure | Medium |
| P0196 | Engine Oil Temperature Sensor Range/Performance | Oil Temp | Low |
| P0197 | Engine Oil Temperature Sensor Low | Oil Temp | Low |
| P0198 | Engine Oil Temperature Sensor High | Oil Temp | Low |
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.