Info for a 2014 VW Passat Alltrack

[deadlywill]

Check engine light on - P219600 code on - O2 Sensor Signal Stuck Rich Bank 1 Sensor 1. Can clear the code with the Ancel VD700 but comes back a week or so later. No other codes.
Car a bit noisier on acceleration. Still runs OK. Been strong smell of exhaust fumes if I have the drivers side window open.
Noticed today some oil/grease covering the right side of the turbo. See pic. Can't say I saw it before or not it's pretty dark down there but found it today with a torch.
Any ideas??
Its going in to the mechanics but need to be better armed when going in.



Thanks in advance for the help.

[MIG]

A boost or exhaust leak can cause a rich code like that, try to pin down where it's leaking from.


The mechanic should be able to do a smoke test if it's a harder to find leak.

[deadlywill]

Had it for 4 hours testing in the shop. They couldn't find anything wrong with it. No codes on their scan. Said he cleaned up the oil/grease bit and tightened some hoses that were a bit loose. See how it goes now.