B205C Diagnostic Trouble Code

B205C 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 B205C diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
Malfunction Indicator Lamp (MIL) illuminated

Possible Causes :

A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
Some aftermarket accessories and performance modifications
Dirty air cleaner element Damaged DPF

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. Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications.

Process Tips

Diagnostic trouble code B205C 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 B205C.

Fortunately, B205C is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B205C Trouble Code For Specific Cars

B205C Nissan Liberta Villa Column Reach Motor Stalled
B205C Gregoire Sport Passenger Seatback Forward Switch Circuit Short to Ground
B205C Nissan Nv400 Control Sleeve Sensor Malfunction
B205C Volkswagen Jetta A4 Right Front Sensor Circuit Failure
B205C Keller Super Chief Seat Passenger Memory Position Error
B205C Mg J4 Air Suspension RR Height Sensor Circuit Failure
B205C Suzuki Alto Vi Memory 1 Switch Circuit Open