P018F
Fuel System Over Pressure Relief Valve Frequent Activation
Generic code
Fuel and Air Metering
High severity
Hard repair
Free on OBD DashX
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What P018F means
- Relief valve for high pressure in fuel system is frequently activated
Possible symptoms
- Decrease in fuel economy due to inoperative intake air temperature sensor
- Crank, but no start
- Problems with a particular system indicating a possible communication loss in this area
- Engine failure
Possible causes
- Faulty fuel pressure sensor
- Fuel pressure sensor harness is open or shorted
- Fuel pressure sensor electrical circuit poor connection
- Faulty Engine Control Module (ECM)
Related parts
- Fuel Pressure Relief Sensor: Fuel Pressure Relief Sensor monitors any excess fuel taken in the fuel line that is returned back to the tank. Problems lead to engine misfire, poor fuel economy & poor acceleration
Possible solutions
- Inspects the intake air temperature sensor and wiring for damages
Free on OBD DashX
P018F on OBD DashX
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