V50 ABS Speed Signal Fault

Hey, I've got a 2007 Volvo V50 diesel with nearly 240k on the clock that's started playing up. The ABS lamp is constantly lit, traction control seems to be having a fit, and I'm pretty sure the ABS system is completely dead. I've plugged in a diagnostic tool and it's showing a speed signal fault. Any ideas where to start looking? I'm not a mechanic but I can usually follow instructions.

4 comment(s)

Sounds familiar! I've got a V50 diesel too, and I had similar issues a while back. ABS light on, traction control going nuts, the whole shebang. Did the diagnostic tool point to a specific wheel speed sensor, or is it a more general fault?

It's a pretty general fault, unfortunately. Just says something about 'speed signal fault' and 'affected control unit defective'. Doesn't seem to be pointing to any particular sensor. Was your fault the same?

Yeah, mine was a similar vague error, and it turned out to be the ABS control unit itself. Sadly, it wasn't a cheap fix. Ended up having to take it to a workshop. They said the unit was faulty and needed replacing. Cost me around 1000€ all in.

Ouch, that's not what I wanted to hear! Thanks for the heads up, though. Sounds like I'll be booking it in for a visit to the mechanic, then. Cheers for the advice!

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