P0001
Fuel Volume Regulator Control Circuit/Open
Fuel injector, fuel pump, fuel pressure, and fuel rail OBD-II codes — with diagnostic notes for tuners.
Fuel system codes typically indicate genuine fuel delivery issues — clogged injector, failing HPFP, dirty LPFP, leaking fuel rail. Suppress only after the underlying cause is rectified.
Fuel Volume Regulator Control Circuit/Open
Fuel Volume Regulator Control Circuit Range/Performance
Fuel Volume Regulator Control Circuit Low
Fuel Volume Regulator Control Circuit High
Fuel Shutoff Valve "A" Control Circuit/Open
Fuel Shutoff Valve "A" Control Circuit Low
Fuel Shutoff Valve "A" Control Circuit High
Air Assisted Injector Control Range/Performance
Air Assisted Injector Control Circuit or Circuit Low
Air Assisted Injector Control Circuit High
Fuel Rail/System Pressure - Too Low
Fuel Rail/System Pressure - Too High
Fuel Pressure Regulator 1 Performance
Fuel Pressure Regulator 1 Control Circuit Low
Fuel Pressure Regulator 1 Control Circuit High
Fuel System Leak Detected - Large Leak
Fuel System Leak Detected - Small Leak
Insufficient Coolant Temperature for Closed Loop Fuel Control
Fuel Trim Malfunction (Bank 1)
Fuel Trim Malfunction (Bank 2)
Fuel Composition Sensor Circuit Malfunction
Fuel Composition Sensor Circuit Range/Performance
Fuel Composition Sensor Circuit Low Input
Fuel Composition Sensor Circuit High Input
Fuel Temperature Sensor A Circuit Malfunction
Fuel Temperature Sensor A Circuit Range/Performance
Fuel Temperature Sensor A Circuit Low Input
Fuel Temperature Sensor A Circuit High Input
Fuel Temperature Sensor A Circuit Intermittent
Fuel Temperature Sensor B Circuit Malfunction
Fuel Temperature Sensor B Circuit Range/Performance
Fuel Temperature Sensor B Circuit Low Input
Fuel Temperature Sensor B Circuit High Input
Fuel Temperature Sensor B Circuit Intermittent
Fuel Rail Pressure Sensor Circuit Malfunction
Fuel Rail Pressure Sensor Circuit Range/Performance
Fuel Rail Pressure Sensor Circuit Low Input
Fuel Rail Pressure Sensor Circuit High Input
Fuel Rail Pressure Sensor Circuit Intermittent
Injector Circuit Malfunction
Cold Start Injector 1 Malfunction
Cold Start Injector 2 Malfunction
Fuel Pump Primary Circuit Malfunction
Fuel Pump Secondary Circuit Low
Fuel Pump Secondary Circuit High
Fuel Pump Secondary Circuit Intermittent
Injection Pump Fuel Metering Control "A" Malfunction (Cam/Rotor/Injector)
Injection Pump Fuel Metering Control "A" Range/Performance (Cam/Rotor/Injector)
Injection Pump Fuel Metering Control "A" Low (Cam/Rotor/Injector)
Injection Pump Fuel Metering Control "A" High (Cam/Rotor/Injector)
Injection Pump Fuel Metering Control "A" Intermittent (Cam/Rotor/Injector)
Injection Pump Fuel Metering Control "B" Malfunction (Cam/Rotor/Injector)
Injection Pump Fuel Metering Control "B" Range/Performance Injector)
Injection Pump Fuel Metering Control "B" Low (Cam/R
Injection Pump Fuel Metering Control "B" High (Cam/R
Injection Pump Fuel Metering Control "B" Intermittent Injector)
Cylinder I Injector Circuit Low
Cylinder I Injector Circuit High
Cylinder 2 Injector Circuit Low
Cylinder 2 Injector Circuit High
Cylinder 3 Injector Circuit Low
Cylinder 3 Injector Circuit High
Cylinder 4 Injector Circuit Low
Cylinder 4 Injector Circuit High
Cylinder 5 Injector Circuit Low
Cylinder 5 Injector Circuit High
Cylinder 6 Injector Circuit Low
Cylinder 6 Injector Circuit High
Cylinder 7 Injector Circuit Low
Cylinder 7 Injector Circuit High
Cylinder 8 Injector Circuit Low
Cylinder 8 Injector Circuit High
Cylinder 9 Injector Circuit Low
Cylinder 9 Injector Circuit High
Cylinder 10 Injector Circuit Low
Cylinder 10 Injector Circuit High
Cylinder 11 Injector Circuit Low
Cylinder 11 Injector Circuit High
Cylinder 12 Injector Circuit Low
Cylinder 12 Injector Circuit High
Misfire Detected with Low Fuel
Misfire Detected - Fueling Disabled
Fuel Level Sensor Circuit Malfunction
Fuel Level Sensor Circuit Range/Performance
Fuel Level Sensor Circuit Low Input
Fuel Level Sensor Circuit High Input
Fuel Level Sensor Circuit Intermittent
Fuel Injector Control Module Performance
Fuel Injector Control Module Relay Control
Alternative Fuel Control Module KAM Error
Alternative Fuel Control Module RAM/ROM Error
Fuel Cap Lamp Control Circuit
Fuel Pump “A” Control Circuit /Open
Fuel Pump “A” Control Circuit Low
Fuel Pump “A” Control Circuit High
Fuel Level Output Circuit Malfunction
EVAP Fuel Vapor Temp Sensor Circ
EVAP Fuel Vapor Temp Sensor Perf
EVAP Fuel Vapor Temp Sensor Circ Low Voltage
EVAP Fuel Vapor Temp Sensor Circ High Voltage
EVAP Fuel Vapor Temp Sensor Circ Interm
Fuel Fired Heater Disabled
Fuel Fired Heater Perf
Fuel Level SensorB Circ
Fuel Level SensorB Perf
Fuel Level SensorB Circ Low
Fuel Level SensorB Circ High
Fuel Level SensorB Circ Interm
Fuel Injector Group A Supply Voltage Circ/Open
Fuel Injector Group A Supply Voltage Circ Low
Fuel Injector Group A Supply Voltage Circ High
Fuel Injector Group B Supply Voltage Circ/Open
Fuel Injector Group B Supply Voltage Circ Low
Fuel Injector Group B Supply Voltage Circ High
Fuel Injector Group C Supply Voltage Circ/Open
Fuel Injector Group C Supply Voltage Circ Low
Fuel Injector Group C Supply Voltage Circ High
Fuel Injector Group D Supply Voltage Circ/Open
Fuel Injector Group D Supply Voltage Circ Low
Fuel Injector Group D Supply Voltage Circ High
Water in Fuel Sensor Circ
Water in Fuel Sensor Circ Range/Perf
Water in Fuel Sensor Circ Low
Water in Fuel Sensor Circ High
Water in Fuel Sensor Circ Interm
Water in Fuel Condition
Injector Ctrl Press Sensor Circ
Injector Ctrl Press Sensor Circ Range/Perf
Injector Ctrl Press Sensor Circ Low
Injector Ctrl Press Sensor Circ High
Injector Ctrl Press Sensor Circ Interm
Injector Ctrl Press Too High
Injector Ctrl Press Too High-Engine Off
Injector Ctrl Press Too Low
Injector Ctrl Press Too Low-Engine Cranking
Injector Ctrl Press Erratic
Fuel Press Reg 2 Perf
Fuel Press Reg 2 Ctrl Circ
Fuel Press Reg 2 Ctrl Circ Low
Fuel Press Reg 2 Ctrl Circ High
Fuel Cap Sensor/Switch Circ
Fuel Cap Sensor/Switch Circ Range/Perf
Fuel Cap Sensor/Switch Circ Low
Fuel Cap Sensor/Switch Circ High
Fuel Cap Sensor/Switch Circ Interm/Erratic
Low Press Fuel Sys Sensor Circ
Low Press Fuel Sys Sensor Circ Range/Perf
Low Press Fuel Sys Sensor Circ Low
Low Press Fuel Sys Sensor Circ High
Low Press Fuel Sys Sensor Circ Interm
Throttle/Fuel Inhibit Circ
Throttle/Fuel Inhibit Circ Range/Perf
Throttle/Fuel Inhibit Circ Low
Throttle/Fuel Inhibit Circ High
Injector Ctrl Press Reg Circ/Open
Injector Ctrl Press Reg Circ Low
Injector Ctrl Press Reg Circ High
Fuel Pump B Ctrl Circ /Open
Fuel Pump B Ctrl Circ Low
Fuel Pump B Ctrl Circ High
Fuel Pump A Low Flow / Perf
Fuel Pump B Low Flow / Perf
Fuel Shutoff Valve B Ctrl Circ/Open
Fuel Shutoff Valve B Ctrl Circ Low
Fuel Shutoff Valve B Ctrl Circ High
Fuel Mode Indicator Lamp Ctrl Circ