Peugeot 4007 Overheating Error

I had a similar issue with my 4007 (diesel too). Overheating and errors can be tricky. Have you checked for any coolant leaks? Also, take a look at the air intake – any blockages? It could also be related to the vacuum system, messing with the bypass valve operation.

Coolant level is stable, so no obvious leaks. Where exactly should I be looking at the air intake and vacuum system? I'm not super savvy with car repair, but willing to have a look myself.

If coolant is fine, the air intake is the hose running from the air filter box to the engine. Check for cracks or obstructions. For the vacuum system, it's a bit more complex. Given the overheating and error codes, I'd recommend getting it properly diagnosed at a workshop. Could be a sensor issue triggering the bypass valve problem, or something else entirely. I ended up having to take mine in.

Thanks for the advice. I'll take it to the workshop and mention the vacuum system. Turns out the error was indeed a consequential error resulting from another error. Repair cost was 0€, thankfully!