Fuel System Codes
5,039 OBD-II diagnostic trouble codes in this category.
Showing page 29 of 51 (5,039 codes total)
| Code | Description | Subsystem | Severity |
|---|---|---|---|
| P1586 | Cruise Control Brake Switch 2 Circuit (Buick) | Engine | Medium |
| P1590 | Neutral Position Switch Circuit High Input (Subaru) | Engine | Medium |
| P1591 | Neutral Position Switch Circuit Low Input (Subaru) | Engine | Medium |
| P1592 | Neutral Position Switch Circuit MT Model (Subaru) | Engine | Medium |
| P1593 | DISA Control Circuit Electrical (Bmw) | Engine | Medium |
| P1601 | Serial Communication Problem With Devise 1 (Buick) | Engine | Medium |
| P1602 | Control Module Self Test Control Module Defective (Bmw) | Engine | Medium |
| P1603 | Control Module Self Test Torque Monitoring (Bmw) | Engine | Medium |
| P1605 | Loss OF HVAX Serial Data (Buick) | Engine | Medium |
| P1606 | Serial Communication Problem With Device 6 (Buick) | Engine | Medium |
| P1609 | Serial Communicating Link EML (Bmw) | Engine | Medium |
| P1610 | Loss Of PZM Serial Data (Buick) | Engine | Medium |
| P1612 | Loss OF IPM Serial Data (Buick) | Engine | Medium |
| P1613 | Loss Of DIM Serial Data (Buick) | Engine | Medium |
| P1614 | Loss Of RIM Serial Data (Buick) | Engine | Medium |
| P1615 | Loss Of VTD Serial Data (Buick) | Engine | Medium |
| P1617 | Engine Oil Level Switch Circuit (Buick) | Oil System | High |
| P1618 | SBDS Interactive Codes | Engine | Medium |
| P1619 | MAP Cooling Control Circuit Signal Low (Bmw) | Cooling System | High |
| P1620 | MAP Cooling Control Circuit Signal High (Bmw) | Cooling System | High |
| P1622 | MAP Cooling Control Circuit Electrical (Bmw) | Cooling System | High |
| P1626 | Theft Deterrent Fuel Enable Signal Lost (Buick) | Fuel Delivery | Medium |
| P1627 | A/D Performance (Buick) | Engine | Medium |
| P1628 | ECT Pull-Up Resistor (Buick) | Engine | Medium |
| P1629 | Theft Deterrent System Cranking Signal (Buick) | Engine | Medium |
| P1630 | Theft Deterrent Learn Mode Active (Buick) | Engine | Medium |
| P1631 | Theft Deterrent Start Enable Signal Not Correct (Buick) | Engine | Medium |
| P1640 | Internal Control Module ROM RAM Error (Bmw) | Engine | Medium |
| P1641 | FC Relay 1 Control Circuit (Buick) | Engine | Medium |
| P1642 | FC Relay 2 And 3 Control Circuit (Buick) | Engine | Medium |
| P1644 | TP Output Circuit (Buick) | Engine | Medium |
| P1646 | Driver 1 Line 6 (Buick) | Engine | Medium |
| P1647 | Driver 1 Line 7 (Buick) | Engine | Medium |
| P1649 | Fuel Injection Pump Module (Mazda) | Fuel Delivery | Medium |
| P1651 | Fan 1 Relay Control Circuit (Buick) | Engine | Medium |
| P1652 | Powertrain Induced Chassis Pitch Output Circuit (Buick) | Engine | Medium |
| P1653 | Oil Level Lamp Control Circuit (Buick) | Oil System | High |
| P1655 | TMA Or TMB Signal Line Fault (Acura) | Engine | Medium |
| P1660 | A/T FI Data Line Failure (Acura) | Engine | Medium |
| P1661 | MIL Control Circuit (Buick) | Engine | Medium |
| P1662 | Cruise Control Inhibit Control Circuit (Buick) | Engine | Medium |
| P1663 | Oil Life Lamp Control Circuit (Buick) | Oil System | High |
| P1665 | Driver 3 Line 5 (Buick) | Engine | Medium |
| P1666 | Driver 3 Line 6 (Buick) | Engine | Medium |
| P1667 | Reverse Inhibit Solenoid Control Circuit (Buick) | Engine | Medium |
| P1669 | ABS Unit Expected (Buick) | Engine | Medium |
| P1670 | Driver 4 (Buick) | Engine | Medium |
| P1671 | A/T FI Data Line No Signal (Acura) | Engine | Medium |
| P1672 | A/T FI Data Line Failure (Acura) | Engine | Medium |
| P1673 | Engine Hot Lamp Control Circuit (Buick) | Engine | Medium |
| P1674 | Tachometer Control Circuit (Buick) | Engine | Medium |
| P1676 | Traction Control System FI Data Line No Signal (Acura) | Engine | Medium |
| P1677 | Traction Control System FI Data Line Failure (Acura) | Engine | Medium |
| P1678 | FPTDR Signal Line Failure (Acura) | Engine | Medium |
| P1679 | Drive By Wire MIL Circuit Open Circuit (Volkswagen) | Engine | High |
| P1680 | Driver 5 (Buick) | Engine | Medium |
| P1681 | A/T FI Signal A Low Input (Acura) | Engine | Medium |
| P1683 | Driver 5 Line 3 (Buick) | Engine | Medium |
| P1685 | Driver 5 Line 5 (Buick) | Engine | Medium |
| P1686 | A/T FI Signal B Low Input (Acura) | Engine | Medium |
| P1687 | A/T FI Signal B High Input (Acura) | Engine | Medium |
| P1688 | Internal Fuel Injection Pump Controller Failure (Chrysler) | Fuel Delivery | Medium |
| P1689 | Delivered Torque Circuit Fault (Buick) | Engine | Medium |
| P1690 | Traction Control System STB Line Failure (Acura) | Engine | Medium |
| P1691 | Coolant Gage Circuit Low Voltage (Buick) | Cooling System | High |
| P1692 | Coolant Gage Circuit High Voltage (Buick) | Cooling System | High |
| P1694 | Tachometer Circuit High Voltag (Buick) | Engine | Medium |
| P1695 | Remote Keyless Entry Circuit Low (Buick) | Engine | Medium |
| P1696 | Traction Control Fuel Cut Signal Low Input (Acura) | Fuel Delivery | Medium |
| P1697 | Traction Control Fuel Cut Signal High Input (Acura) | Fuel Delivery | Medium |
| P1699 | No CCD J1850 Messages Received From The Climate Control Module (CCM) (Chrysler) | Engine | Medium |
| P1703 | Brake On Off Switch Out of Self-Test Range (Ford) | Engine | Medium |
| P1707 | Transfer Case Neutral Indicator Hard Fault Present (Ford) | Engine | Medium |
| P1712 | Trans Torque Reduction Request Signal Malfunction (Ford) | Engine | Medium |
| P1713 | TFT Sensor In Range Failure Low Value (Ford) | Engine | Medium |
| P1714 | SSA Inductive Signature Malfunction (Ford) | Engine | Medium |
| P1715 | SSB Inductive Signature Malfunction (Ford) | Engine | Medium |
| P1716 | SSC Inductive Signature Malfunction (Ford) | Engine | Medium |
| P1717 | SSD Inductive Signature Malfunction (Ford) | Engine | Medium |
| P1718 | TFT Sensor In Range Failure High (Ford) | Engine | Medium |
| P1729 | 4x4 Low Switch Error (Ford) | Engine | Medium |
| P1734 | Pressure Control Solenoid B Electrical (Bmw) | Engine | Medium |
| P1737 | Lockup Solenoid (Mazda) | Engine | Medium |
| P1743 | Pressure Control Solenoid E Electrical (Bmw) | Engine | Medium |
| P1744 | Pressure Control Solenoid A Electrical (Bmw) | Engine | Medium |
| P1747 | CAN Bus Monitoring (Bmw) | Engine | Medium |
| P1749 | Secondary Pressure Solenoid Communication Error (Bmw) | Engine | Medium |
| P1750 | Secondary Pressure Solenoid Circuit Range Performance (Bmw) | Engine | Medium |
| P1751 | Secondary Pressure Solenoid Open Circuit (Bmw) | Engine | High |
| P1753 | TCM A/T Lockup Solenoid Valve A Fault (Acura) | Engine | Medium |
| P1756 | Governor Pressure Not Equal To Target At 15-20 PSI (Chrysler) | Engine | Medium |
| P1757 | Governor Pressure Above 3 PSI When Request Is 0 PSI (Chrysler) | Engine | Medium |
| P1758 | TCM A/T Lockup Solenoid Valve B Fault (Acura) | Engine | Medium |
| P1759 | 2-4 Brake Failsafe Valve Malfunction (Mazda) | Engine | Medium |
| P1770 | CAN Torque Interface (Bmw) | Engine | Medium |
| P1774 | Hydraulic Pressure Sensor 1 Too Low (Volkswagen) | Engine | Medium |
| P1779 | Engine Torque Delivered To TCM Signal (Buick) | Engine | Medium |
| P1780 | CAN Torque Reduction (Bmw) | Engine | Medium |
| P1781 | 4x4 Low Switch is Out of Self-Test Range (Ford) | Engine | Medium |
| P1782 | P/ES Circuit Out Of Self Test Range (Ford) | Engine | 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.