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Peugeot 407 climate control malfunction

My 2004 Peugeot 407 (gasoline engine) climate control panel has stopped working. The error memory has stored errors, the heating output is very low, and the air conditioning won't engage. I suspect a defective cable or plug connection. Has anyone else had this?

4 comment(s)

Sounds familiar! I have a 407 too, and had similar gremlins in the climate control. It was like the whole system had a mind of its own. Check the blower motor resistor and its wiring harness. Those connectors can get corroded or damaged, causing all sorts of weird electrical faults. It’s like a domino effect when those things go bad.

Thanks! Could you explain where the blower motor resistor is located and how to check the wiring harness for problems? I want to be thorough.

The resistor is usually near the blower motor, often under the dash on the passenger side. Tracing the wires is a pain. Honestly, if you're not super comfortable with electrical stuff, it might be worth getting a workshop to take a peek. They can diagnose it properly. I got mine checked out and the bill was about 95€. Best money I ever spent.

Thanks for the advice and the cost estimate. I'll visit a workshop to have the cable and plug connections checked and repaired if needed.

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