I had the G28 engine speed sensor replaced last week on my 2002 Quattro (BAM) and replaced a split hose and PRV valve myself yesterday, but I still appear to have a problem!

On my way to work the EML/ECL light came on the engine semi stalls and the EPC light comes on and the revs stay around 1200 at idle instead of 800, checked with a code reader and have the following codes:

P0321 - ignition/distributor engine speed input circuit range/performance
P0322 - ignition/distributor engine speed input circuit no signal

It did the same last week before I had the sensor replaced, could it be a faulty sensor, bad wiring from the sensor to wherever or something else???

Taking it back to the garage tomorrow to see what they say anyway but be nice to have a few ideas on what the problem could be.