elisa_tiger69

Peugeot 4008 Overheating Issue

My 2013 Peugeot 4008 diesel is overheating like crazy. It's only got 30031 km on the clock, but the check engine light keeps popping up, and I've noticed coolant leaking under the car. Seems like there's way too much pressure in the cooling system. I'm thinking it might be a control unit communication error? Anyone else experienced something similar?

4 comment(s)

Sounds familiar! I had a similar issue with my old Volvo V70. Same symptoms: overheating, check engine light, and coolant leaks. Turned out to be a faulty connection somewhere in the control module wiring. Have you checked the cable and plug connections to the various components? A defective connection is often the culprit.

Interesting! You mentioned a faulty connection. Was it obvious, like a corroded plug, or something more subtle? Did you need any special tools to diagnose it? I'm trying to avoid a huge bill from the mechanic if I can!

For me it wasn't obvious at all. Everything looked fine at first glance. It was only after some careful probing with a multimeter that the bad connection was identified. Best is to check with car diagnostics at the workshop. I ended up at the workshop and a bill for 120€.

Thanks for the advice! I took it to my local garage and they found it was indeed a defective cable or plug connection. Car diagnostics showed a control module communication fault and they charged me 95€ to fix it. I really appreciate the help!

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