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matsneumann3

Seat Leon Overheating Issue

I have a 2006 Seat Leon with a gasoline engine and 132586 km on the clock. I'm getting an error related to the bypass valve, and the engine is overheating. Could this actually be the bypass valve, or something else?

Summary of the thread

A 2006 Seat Leon with a gasoline engine is experiencing overheating and an error related to the bypass valve. While a malfunctioning bypass valve can cause overheating, the issue may stem from another underlying problem. It is suggested to have the vehicle diagnosed by a professional, as similar symptoms in another case were due to a different issue. Ultimately, the bypass valve was not the cause, and the problem was resolved without incurring costs for the valve.

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4 comment(s)

friedhelmghost9

I drive a Seat Leon too, although I am unsure of the exact year of manufacture. A bypass valve malfunction can certainly cause overheating. Have you noticed any power loss or decrease in fuel efficiency? It is also worth checking the exhaust system for any leaks. What error code is stored in the error memory?

matsneumann3 (community.author)

I haven't noticed any exhaust leaks, but I did notice power loss. How did you resolve your bypass valve issue?

friedhelmghost9

In my case, the symptoms were similar, including the loss of power. However, it turned out the bypass valve error was consequential, triggered by a different underlying issue. I recommend you take your Leon to a workshop for diagnosis. It sounds like you may have a similar situation.

matsneumann3 (community.author)

Just letting you know it was a false alarm. The bypass valve was fine. The mechanic found another issue that triggered the error. No cost for the bypass valve!

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SEAT

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LEON