B25AC BMW Fault Code

Description:

The issue covered by the bulletin involves a power steering noise/whine or fluid leak from the power steering pump, gear or high pressure side power steering hose during extreme low outdoor temperature operation.

B25AC Code Symptoms :

When you turn on the ignition, the Service Engine Soon or Check Engine B25AC light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the B25AC!

Diagnosis And Repairing B25AC

B25AC OBD2 reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.

How to fix B25AC code ?

• Continuous oil flow to the VCT piston chamber
• Faulty TCM or TCM programming
• Ignition misfiring
• Faulty Mass Air Flow (MAF) sensor