EmBe2021
Seat Leon Diesel Exhaust Temperature Sensor Problem
Summary of the thread
A 2002 Seat Leon with a diesel engine exhibited issues such as a check engine light, reduced engine power, and increased fuel consumption. The problem was traced to a faulty exhaust temperature sensor, potentially caused by a leak in the exhaust system affecting the emission control. The solution involved replacing the sensor and repairing the leak, which resolved the issues and improved the car's performance.
Did this summary help you solve your problem?
4 comment(s)
EmBe2021 (community.author)
Fuel consumption has been noticeably worse, yes. How did you resolve your issue? Was it also the exhaust temperature sensor? Did you have any other symptoms? Any details would be greatly appreciated.
noahschmid33
Yep, exhaust temperature sensor was the culprit for me too. I'd get it checked at a workshop, especially with the leak you suspect. Could save you bigger problems down the line. Good luck!
EmBe2021 (community.author)
Turns out it was the exhaust temperature sensor. The garage found a small leak in the exhaust system, which they reckon caused the temperature fluctuation and fried the sensor. Sensor replacement and fixing the leak came to around 265€. Check engine light is gone, and the car seems to be running smoother. Thanks for the tip!
rmh_community_comment_box_header
community_crosslink_scanner_headline
community_crosslink_scanner_intro
community_crosslink_scanner_title
community_crosslink_scanner_price
community_crosslink_rmh_headline
community_crosslink_rmh_intro
community_crosslink_rmh_title
community_crosslink_rmh_subtitle
community_crosslink_rmh_brand
SEAT
community_crosslink_rmh_model
LEON
noahschmid33
That sounds suspiciously like the issue I had with my Leon a while back. Check engine light, sluggish performance, the whole shebang. Was your fuel consumption also up? Mine was drinking petrol like it was going out of style.