Hello

Please help. I have a 2003 A4 B6 with a 2.4 V6 petrol engine (BDV). It has been running slightly lumpy for a while - especially when cold and intermittent MIL on/off.

VCDS has reported 4 faults as shown below.

4 Faults Found:

17537 - Fuel Trim; Bank 2 (Mult)
P1129 - 002 - System too Rich
17535 - Fuel Trim; Bank 1 (Mult)
P1127 - 002 - System too Rich - Intermittent
16518 - Oxygen (Lambda) Sensor B1 S1
P0134 - 004 - No Activity - Intermittent
16538 - Oxygen (Lambda) Sensor B2 S1
P0154 - 004 - No Activity - Intermittent

I have done 160,000 miles in the car and it does run ok - especially on the motorway. If I am driving locally i.e just a few miles a day, then the MIL will come on. If I am driving on the motorway (which I do quite a bit) around 200 miles in a day, then the car runs fine.

I am suspecting the o2 sensors or an air leak, as it seems the engine is running too rich.
VCDS - Block 032= lambda 2.8,-18.8,3.0,-22.7

Many Thanks
Steve