B17BF Diagnostic Trouble Code

B17BF 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 B17BF diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Faulty IMRC actuator relay (if equipped)

Repair Processes :

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. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code B17BF 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 B17BF.

Fortunately, B17BF is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B17BF Trouble Code For Specific Cars

B17BF Mercedes-benz 380 Air Bag Passenger Pressure Switch Circuit Open
B17BF Mitsubishi Jeep Autolamp Sensor Input Circuit Failure
B17BF Dodge Avenger
B17BF Vauxhall Calibra Pressure Control Solenoid "A" Short Circuit
B17BF Daewoo Tacuma
B17BF Cadillac Solitaire Dim Panel Increase Input Circuit Short To Ground
B17BF Jeep Station Wagon Seat Driver Recline Backward Circuit Short To Battery