Lambda/Oxygen Sensor help?
Lambda/Oxygen Sensor help?
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Discussion

LtLunchbox

Original Poster:

4 posts

93 months

Sunday 27th January 2019
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Hi,
About a month ago the engine management light came on my Seat Leon 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?) 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 (On a seat or any other VAG car)?

- 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

LOTUS110

35 posts

194 months

Sunday 27th January 2019
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Check your oil level to see if it is high , also check if you can smell petrol in the oil.
If it yes to both, then the High pressure fuel pump on the engine is leaking causing the oil/petrol mix to get by the piston ring causing a rich mixture.

rottenegg

1,058 posts

93 months

Monday 28th January 2019
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If the garage used a pattern sensor, they've charged you ~ £230 for fitting and diagnostics scan. If they used a genuine sensor, it's about £130...... for a 20 min job, inc diagnostics. I'm in the wrong business!

Their analysis was basic to say the least. There are far more comprehensive checks garages can do before firing the parts canon at a car.

In future, do yourself a favour and use Google to your advantage. Everything you need to know is a few clicks away. Never drop a car off to an unfamiliar garage without schooling yourself up on the basic procedure and parts cost.