Peugeot 408 damping adjustment fault

I had something similar with my 408! Noticed the bumpy ride first, then the warning light came on. Damping adjustment, eh? Sounds like a suspension issue, could be anything from a dodgy sensor to the shock absorber itself. A 'cable or plug connection defective' sounds plausible. Have you tried wiggling the connectors on the suspension components? Sometimes, a loose connection can cause havoc.

Thanks for the reply! When you say wiggling the connectors, where exactly are these connectors located? Are they easy to get to? I'm not super mechanically inclined, but I can usually manage simple stuff if I know what I'm looking for. Did your issue end up being a connector problem, or something more serious?

It was definitely a pain. The connectors are usually near the top of the shock absorbers, but honestly, getting to them can be a bit of a hassle depending on your setup. In my case, it turned out to be more than just a loose connection. The error message remained. If it's not something obvious, I'd recommend getting it checked at a workshop. Suspension problems can be tricky and potentially dangerous to mess with if you don't know what you're doing.

Thanks so much for the advice! I took it to a local garage, and you were spot on, it was indeed a faulty connection. They replaced the connector and cleared the error code. Cost me 95€ all in, which I was happy with. At least it wasn't a new shock absorber!