Without reasising I cleared a 'pending' code on the AWD this after noon....as soon as I got eratic idle and constant plumes of black smoke from the exhaust as if it was running to lean....was like an old morris maestro diesel I once had lol

The code is P0134, description is 02 Sensor Circuit No activity Detected - Bank 1 Sebsor 1

I take it this is the lambada sensor?

Cheers