Fault P2096 - Post Catalyst Fuel Trim System Bank1 Too Lean Active

[LeeRS6]

Has anyone had this fault on their car, I've cleared it but reappeared, it is going in Audi next week but just wanted to have an insight.

P2096 - Post Catalyst Fuel Trim System Bank1 Too Lean Active

[LeeRS6]

I've done some more research and it seems like the lambda/oxygen sensor on the cat seems to be the issue, will try that as seems to be a common issue.

[Tadass910]

Yes, I had this issue in 2018 autumn, Audi changed it but in 2019 autumn it appeared again, Audi cleared it, after driving 1000km distance code appeared again after I refilled 100 octane gasoline, then I cleared again a code now driving almost 2000km no issues, it can be a glitch, if a real problem would be code would appear right after your clear it. Also it can be an leak in a exhaust or something, sometimes octane too good for a car.