B154F Diagnostic Trouble Code

B154F is a kind of OBD-II Diagnostic B-Body 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 B154F diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
Dirty air cleaner element Damaged DPF

Repair Processes :

If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground.

Process Tips

Diagnostic trouble code B154F 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 B154F.

Fortunately, B154F is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B154F Trouble Code For Specific Cars

B154F Pierce-arrow 8 Engine Oil Temperature Sensor Range/Performance
B154F Porsche 908 Front Wiper Select Switch "C" Short to Ground
B154F Gmc Firebird Park Brake Actuator Assembly Switch Released Circuit Failure
B154F Marendaz 13 Transmission 4-Wheel Drive Low Indicator Circuit Failure
B154F Tommy Kaira Motor # 1 Input Circuit Short to Gnd
B154F Austin-healey 100 Aux A/C Control Switch Reference Circuit Short to Ground
B154F Vauxhall Astra Power Window RR Motor Circuit Short To Ground