"Diversity antenna, HF (High Frequency) receive path – open circuit or short circuit to ground/battery."

If you're experiencing issues with your BMW and suspect the 800FB7 code is involved, consult a qualified mechanic or BMW specialist for proper diagnosis and repair. With the right guidance, you can get back on the road, enjoying the driving experience that BMW enthusiasts have come to love.

: A short circuit in the mirror's motor or heating element can sometimes "bring down" the entire LIN bus communication for that side of the car. Troubleshooting & Fixes

In BMW’s internal database, 800FB7 corresponds to a communication error or implausible signal related to the Aerial (Antenna) Diversity Module or, in some chassis, a fault within the Telematics Control Unit (TCU) / Combobox .

A diagnostic scan using tools like , BimmerLink , or Carly reveals the specific "800FB7" entry.

The passenger side mirror fails to defrost or clear fog in cold weather.