milaschwarz35
Peugeot 508 Overheating Bypass Valve Error
Summary of the thread
A 2011 Peugeot 508 diesel is experiencing overheating and a bypass valve error, with the error memory full. The issue may be linked to a blocked air intake or a larger exhaust system problem, as indicated by engine stalling and poor fuel efficiency. A diagnostic evaluation by a certified workshop is recommended to identify the root cause. The problem was resolved, confirming the bypass valve error was a symptom of another fault.
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4 comment(s)
milaschwarz35 (community.author)
Engine stalling, yes, now that you mention it! Fuel efficiency has been terrible too. So, you think this bypass valve error is just a symptom of a bigger exhaust issue?
christianwolf1
Correct. In my case, the bypass valve error was consequential. Given the engine stalling and decreased fuel efficiency, I recommend a diagnostic evaluation by a certified workshop to find the root cause.
milaschwarz35 (community.author)
Thanks! I took your advice, and the workshop sorted it. The bypass valve was a red herring, just a symptom of another fault, like you said. It's fixed, and it was free! Cheers for the help!
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PEUGEOT
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508
christianwolf1
I have a 508 too, and I had similar problems recently. Were there any engine stalls or fuel efficiency drops beforehand? It could be related to the exhaust system.