dieterhunter10
Seat Exeo Diesel power loss and check engine light
Summary of the thread
A 2008 Seat Exeo diesel experienced significant power loss and an illuminated check engine light, suggesting it might be in limp mode. Possible causes included a faulty throttle valve, accelerator pedal module, or an electronics issue. After consulting with others, the owner suspected the throttle valve and confirmed it was the problem after a professional inspection. Replacing the throttle valve resolved the issue, restoring the car's performance.
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4 comment(s)
dieterhunter10 (community.author)
That's interesting about the air intake. Where specifically should I look, and what type of sensor was it on your Megane? I'm trying to determine if I can inspect it myself before visiting a workshop.
rolandstar7
It was a nuisance. On the Megane, the air intake is usually located near the front grille, but your car might differ. The sensor was part of the air flow meter. Given the rough idling, reduced fuel efficiency, and check engine light, the throttle valve seems like a likely culprit. Unless you're comfortable with automotive work, I'd recommend taking it to a shop. It could prevent further complications.
dieterhunter10 (community.author)
Took it to the shop. The throttle valve was indeed faulty. A replacement was installed, costing 265€. The car runs perfectly now. Thanks for the assistance!
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SEAT
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EXEO
rolandstar7
That sounds unpleasant! I experienced something similar with my old Renault Megane. Check engine light, power loss... it felt like running a marathon with restricted breathing. Have you inspected the air intake? A blockage could disrupt the airflow, causing engine issues. For me, it turned out to be a faulty sensor, but the symptoms were identical.