elisa_moeller1
Peugeot 408 Keyless Entry Fault
Summary of the thread
The keyless entry on the driver's side door of a 2022 Peugeot 408 hybrid stopped working, with a fault stored in the error memory. The suspected cause was an issue with the door handle electronics. A similar problem was resolved by checking the wiring harness connections to the door handle module, revealing a faulty connection. A professional diagnostic confirmed the defective cable or plug connection, leading to a successful repair.
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4 comment(s)
elisa_moeller1 (community.author)
Thank you for the insight. Could you please elaborate on which specific connections you inspected or which area of the wiring harness was problematic? Any specific diagnostic steps you took would be greatly appreciated.
moritzschwarz5
Certainly. The issue was within the door itself, specifically where the wiring harness connects to the door handle module. A diagnostic scan with a proper tool revealed an intermittent open circuit. While I could try a repair myself, I opted to take it to a workshop for a proper fix and diagnostic. Given the error code stored, and the symptoms you've described, a professional diagnostic would be the next logical step.
elisa_moeller1 (community.author)
I appreciate the advice. I took it to a workshop and they found the cable or plug connection of the component defective, like you suggested. Repair cost was 95€. Everything is working properly again.
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PEUGEOT
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408
moritzschwarz5
I own a 408 too and faced something similar not too long ago. Keyless entry sporadically failed. I initially suspected the key fob battery, but that wasn't it. It turned out to be a faulty connection in the door wiring harness. Have you checked the cable and plug connections to the door handle module?