2) What would happen if the sensor were too far from the toothed wheel?
I've checked the gap on my 1994 530ia crank/rpm sensor, and it was 0.015 in, (less than half the recommended distance, according to the specs I have).
I've seen posts in the archives that problems with this sensor (dirty, etc) may cause code 1222, which is the code I'm getting.
If there were a problem with this sensor, wouldn't the RPM guage reflect the problem too?
Thanks for any replies!