i was checking out my car (93 S4) last night with my buddies vag com and i think something might not be working... when we are recording sensors one in the second group in the forth block doesn't change. it is reading 1025 mbar. so is that a map sensor? i thought we didn't have one of those... or is this reading off of the pressure transducer in the ecu? and if anyone knows what this is, what would it not reading correctly do?

"Altitude". In other words ambient pressure. Ain't gonna change much...:-)

-Uwe-