Oxygen sensor replacement troubles?

Jan 23, 2019
3
0
Hi,
About a month ago the engine management light came on my 2013 1.4 (non act) FR, I took it to the garage, they plugged it in, and saw that the lambda/oxygen sensor was reading too rich. The timestamp was when I had <20 miles of fuel left in the tank, so I thought it might have been something to do with that and chalked it off. They cleared the code and said to come back if it came up again.

Predictably it came back 2 weeks later, I took it back to the garage, was the same issue, so they replaced the sensor completely (£280 parts and labour, I thought this was a bit high? :think:) and said that that should fix it.

That was on Wednesday, on Friday as I was driving home, the light came on again. I ordered a basic OBD reader, and it's the same issue - P2196 oxygen too rich, and on the same sensor they replaced.

I'm going back in on Monday so they can have another look, just wanted to check:
  • If anyone else has had an issue like this?
  • If anyone has any idea what else it could be? (I've seen links to vacuum lines and turbo actuators that I don't want to think about)
  • If this seems normal for diagnosis of an issue and how it's being sorted? This is my first car I've owned, and I've just moved to a new city, so I just chose the highest rated VAG specialist to go to, but I'm not sure if I'm being mucked about
Thanks for reading, and if anyone has anything to add it would be super helpful
 

KoNG

Active Member
Jul 27, 2016
466
98
Canning Town
Muppets .. :D first what you do before you change some parts they should look for Purge Valve N80. Do some road test with measuring. Rarely your lambda sensor fail. There may be also leaking on injector causing this issue. Also, have a quick look on the exhaust system if isn't leaking around lambda
 
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