leontiger6
Seat Altea Oxygen Sensor Problem
Summary of the thread
A 2014 Seat Altea with a diesel engine is experiencing a check engine light and increased fuel consumption, indicating a potential oxygen sensor issue. The problem could stem from a defective cable or plug connection. A visual inspection of the O2 sensor wiring for breaks or corrosion is recommended. Replacing the faulty sensor resolved the issue, turning off the check engine light and potentially normalizing fuel consumption.
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4 comment(s)
leontiger6 (community.author)
It's usually located in the exhaust system, before or after the catalytic converter. Access can be a bit tight depending on which one it is. It may be worth taking it to a workshop. My issue ended up being a faulty sensor, cost me around 95€ to get sorted.
moritzhartmann1
Good shout. Where exactly is the oxygen sensor located? Is it easy to access?
leontiger6 (community.author)
Replacing the oxygen sensor seems to have done the trick. The check engine light is off, and I'm hoping my fuel consumption will return to normal. Thanks for the help!
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SEAT
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ALTEA
moritzhartmann1
I had a similar thing happen with my Altea. Check engine light and all that. I'd start by visually inspecting the O2 sensor wiring. Any obvious breaks or corrosion?