Fuel System Codes
5,039 OBD-II diagnostic trouble codes in this category.
Showing page 46 of 51 (5,039 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P2BDE | Motor Electronics Coolant Temperature Sensor C Circuit Low | Fuel Metering | Medium |
| P2BDF | Motor Electronics Coolant Temperature Sensor C Circuit High | Fuel Metering | Medium |
| P2BE0 | Hybrid/EV Battery Coolant Level Sensor Circuit/Open | Fuel Metering | Medium |
| P2BE1 | Hybrid/EV Battery Coolant Level Sensor Range/Performance | Fuel Metering | Medium |
| P2BE2 | Hybrid/EV Battery Coolant Level Sensor Circuit Low | Fuel Metering | Medium |
| P2BE3 | Hybrid/EV Battery Coolant Level Sensor Circuit High | Fuel Metering | Medium |
| P2BE4 | Hybrid/EV Battery Pack Current Sensor C Circuit | Fuel Metering | Medium |
| P2BE5 | Hybrid/EV Battery Pack Current Sensor C Circuit Range/Performance | Fuel Metering | Medium |
| P2BE6 | Hybrid/EV Battery Pack Current Sensor C Low | Fuel Metering | Medium |
| P2BE7 | Hybrid/EV Battery Pack Current Sensor C High | Fuel Metering | Medium |
| P2BE8 | Hybrid/EV Battery Precharge Contactor Control Circuit B Open | Fuel Metering | Medium |
| P2BE9 | Hybrid/EV Battery Precharge Contactor Control Circuit B Range/Performance | Fuel Metering | Medium |
| P2BEA | Hybrid/EV Battery Precharge Contactor Control Circuit B Low | Fuel Metering | Medium |
| P2BEB | Hybrid/EV Battery Precharge Contactor Control Circuit B High | Fuel Metering | Medium |
| P2BEC | Fuel Control System A Too Lean Bank 1 | Fuel Metering | Medium |
| P2BED | Fuel Control System A Too Rich Bank 1 | Fuel Metering | Medium |
| P2BEE | Fuel Control System A Too Lean Bank 2 | Fuel Metering | Medium |
| P2BEF | Fuel Control System A Too Rich Bank 2 | Fuel Metering | Medium |
| P2BF0 | Fuel Control System B Too Lean Bank 1 | Fuel Metering | Medium |
| P2BF1 | Fuel Control System B Too Rich Bank 1 | Fuel Metering | Medium |
| P2BF2 | Fuel Control System B Too Lean Bank 2 | Fuel Metering | Medium |
| P2BF3 | Fuel Control System B Too Rich Bank 2 | Fuel Metering | Medium |
| P2BF4 | Exhaust Flow Control Valve A Position Circuit | Fuel Metering | Medium |
| P2BF5 | Exhaust Flow Control Valve A Position Circuit Range/Performance | Fuel Metering | Medium |
| P2BF6 | Exhaust Flow Control Valve A Position Circuit Low | Fuel Metering | Medium |
| P2BF7 | Exhaust Flow Control Valve A Position Circuit High | Fuel Metering | Medium |
| P2BF8 | Exhaust Flow Control Valve B Control Circuit/Open | Fuel Metering | Medium |
| P2BF9 | Exhaust Flow Control Valve B Control Circuit Low | Fuel Metering | Medium |
| P2BFA | Exhaust Flow Control Valve B Control Circuit High | Fuel Metering | Medium |
| P2BFB | Exhaust Flow Control Valve B Control Performance | Fuel Metering | Medium |
| P2BFC | Exhaust Flow Control Valve B Position Circuit | Fuel Metering | Medium |
| P2BFD | Exhaust Flow Control Valve B Position Circuit Range/Performance | Fuel Metering | Medium |
| P2BFE | Exhaust Flow Control Valve B Position Circuit Low | Fuel Metering | Medium |
| P2BFF | Exhaust Flow Control Valve B Position Circuit High | Fuel Metering | Medium |
| P2C00 | Fuel Pressure Regulator C Performance | Fuel Metering | Medium |
| P2C01 | Fuel Pressure Regulator D Performance | Fuel Metering | Medium |
| P2C02 | Fuel Pressure Regulator D Control Circuit/Open | Fuel Metering | Medium |
| P2C03 | Fuel Pressure Regulator D Control Circuit Low | Fuel Metering | Medium |
| P2C04 | Fuel Pressure Regulator D Control Circuit High | Fuel Metering | Medium |
| P2C11 | Reductant Pump A Current Too Low | Fuel Metering | Medium |
| P2C1E | Cold Start Fuel Pressure Regulator A Performance | Fuel Metering | Medium |
| P2C1F | Cold Start Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too Low | Fuel Metering | Medium |
| P2C20 | Cold Start Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too High | Fuel Metering | Medium |
| P2C21 | Engine Oil Temperature Sensor A/B Correlation | Fuel Metering | Medium |
| P2C22 | Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit | Fuel Metering | Medium |
| P2C23 | Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Performance | Fuel Metering | Medium |
| P2C24 | Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit Low | Fuel Metering | Medium |
| P2C25 | Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Circuit High | Fuel Metering | Medium |
| P2C26 | Fuel Injector Group B Supply Sense Circuit | Fuel Metering | Medium |
| P2C27 | Fuel Injector Group B Supply Sense Circuit Low | Fuel Metering | Medium |
| P2C28 | Fuel Injector Group B Supply Sense Circuit High | Fuel Metering | Medium |
| P2C37 | Cold Start Engine Coolant Pump Performance | Fuel Metering | Medium |
| P2C38 | Cylinder Head Temperature Sensor B Circuit | Fuel Metering | Medium |
| P2C39 | Cylinder Head Temperature Sensor B Range/Performance | Fuel Metering | Medium |
| P2C3A | Cylinder Head Temperature Sensor B Circuit Low | Fuel Metering | Medium |
| P2C3B | Cylinder Head Temperature Sensor B Circuit High | Fuel Metering | Medium |
| P2C3C | Cylinder Head Temperature Sensor B Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2C3D | Cylinder Head Temperature Sensor A/B Correlation | Fuel Metering | Medium |
| P2C3E | Fan 4 Control Circuit | Fuel Metering | Medium |
| P2C3F | Fan 4 Control Circuit Low | Fuel Metering | Medium |
| P2C40 | Fan 4 Control Circuit High | Fuel Metering | Medium |
| P2C41 | Fan 3 Performance/Stuck Off | Fuel Metering | Medium |
| P2C42 | Fan 4 Performance/Stuck Off | Fuel Metering | Medium |
| P2C43 | Battery Isolation/Voltage Stabilization Control Circuit | Fuel Metering | Medium |
| P2C44 | Battery Isolation/Voltage Stabilization Control Circuit Performance | Fuel Metering | Medium |
| P2C45 | Battery Isolation/Voltage Stabilization Control Circuit Low | Fuel Metering | Medium |
| P2C46 | Battery Isolation/Voltage Stabilization Control Circuit High | Fuel Metering | Medium |
| P2C47 | Battery Isolation/Voltage Stabilization Control Circuit Intermittent | Fuel Metering | Medium |
| P2C48 | Coolant Pump C Control Circuit Performance/Stuck Off | Fuel Metering | Medium |
| P2C49 | Coolant Pump D Control Circuit Performance/Stuck Off | Fuel Metering | Medium |
| P2C4A | Clutch Actuator Position Sensor Circuit | Fuel Metering | Medium |
| P2C4B | Clutch Actuator Position Sensor Circuit Range/Performance | Fuel Metering | Medium |
| P2C4C | Clutch Actuator Position Sensor Circuit Low | Fuel Metering | Medium |
| P2C4D | Clutch Actuator Position Sensor Circuit High | Fuel Metering | Medium |
| P2C4E | Clutch Actuator Position Sensor Circuit Intermittent/Erratic | Fuel Metering | Medium |
| P2C4F | Clutch Actuator Performance | Fuel Metering | Medium |
| P2C50 | Clutch Pedal Position Sensor A/Clutch Actuator Position Sensor Correlation | Fuel Metering | Medium |
| P2C51 | Fuel Level Sensor A/B Correlation | Fuel Metering | Medium |
| P2C52 | Cylinder 1 Fuel Injector B Offset Learning At Min Limit | Fuel Metering | Medium |
| P2C53 | Cylinder 1 Fuel Injector B Offset Learning At Max Limit | Fuel Metering | Medium |
| P2C54 | Cylinder 2 Fuel Injector B Offset Learning At Min Limit | Fuel Metering | Medium |
| P2C55 | Cylinder 2 Fuel Injector B Offset Learning At Max Limit | Fuel Metering | Medium |
| P2C56 | Cylinder 3 Fuel Injector B Offset Learning At Min Limit | Fuel Metering | Medium |
| P2C57 | Cylinder 3 Fuel Injector B Offset Learning At Max Limit | Fuel Metering | Medium |
| P2C58 | Cylinder 4 Fuel Injector B Offset Learning At Min Limit | Fuel Metering | Medium |
| P2C59 | Cylinder 4 Fuel Injector B Offset Learning At Max Limit | Fuel Metering | Medium |
| P2C5A | Cylinder 5 Fuel Injector B Offset Learning At Min Limit | Fuel Metering | Medium |
| P2C5B | Cylinder 5 Fuel Injector B Offset Learning At Max Limit | Fuel Metering | Medium |
| P2C5C | Cylinder 6 Fuel Injector B Offset Learning At Min Limit | Fuel Metering | Medium |
| P2C5D | Cylinder 6 Fuel Injector B Offset Learning At Max Limit | Fuel Metering | Medium |
| P2C5E | Cylinder 7 Fuel Injector B Offset Learning At Min Limit | Fuel Metering | Medium |
| P2C5F | Cylinder 7 Fuel Injector B Offset Learning At Max Limit | Fuel Metering | Medium |
| P2C60 | Cylinder 8 Fuel Injector B Offset Learning At Min Limit | Fuel Metering | Medium |
| P2C61 | Cylinder 8 Fuel Injector B Offset Learning At Max Limit | Fuel Metering | Medium |
| P2C66 | Hybrid/EV Electronics Coolant Pump A Underspeed | Fuel Metering | Medium |
| P2C67 | Hybrid/EV Electronics Coolant Pump A Overspeed | Fuel Metering | Medium |
| P2C68 | Hybrid/EV Electronics Coolant Pump A Stuck/Stalled | Fuel Metering | Medium |
| P2C69 | Drive Motor “A” Phase X Current | Fuel Metering | Medium |
| P2C6A | Drive Motor “A” Phase X Current Low | Fuel Metering | Medium |
| P2C6B | Drive Motor “A” Phase X Current 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.