P108F Diagnostic Trouble Code

P108F is a kind of OBD-II Diagnostic P-Powertrain Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a P108F diagnostic trouble code may include:

Diminished fuel efficiency
Fuel pressure too high
Malfunction Indicator Lamp (MIL) illuminated
Misfire

Possible Causes :

Faulty IMRC actuator/sensor
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code P108F is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P108F.

Fortunately, P108F is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P108F Trouble Code For Specific Cars

P108F Mercedes R 500 Accessory Delay Relay Coil Circuit Short To Battery
P108F Volvo 145
P108F Renault Alaskan Gear Select position short to Battery
P108F Honda Elysion Pressure Transducer Redundant / Secondary Signal Faulted
P108F Renault Eight Gear Shift Position Circuit Range/Performance
P108F Lotus 49 Torque Converter Clutch System Performance
P108F Citroen C3 Front Wiper Motor Relay Circuit Short to Vbatt