My 520i E60 has around 114k km on the odometer. Last week, two error warning pooped out. One is the yellow engine sign on teh dash panel, and the other one is the DSC malfunction sign.
I had the car scanned and three error codes popped out:

Scan result

For the Air Mass System. How can you tell if the sensor is bad, or dirty, or just a hickup from the system?

Anyone know about the 28AE and the 27C3?

Help, please...