In summary, I get the ESP system error, parking brake error, ABS system error simultaneously. They all appear at the same time. The anti-pollution system error has been intermittent for some time. It comes for a couple of days, and then disappears for a couple of weeks.
I have read that this is typically a result of either:
- ABS sensor failure
- EGR valve problem
- Something to do with indicator lights
I was under the impression that this was being caused by high revs, but this isn't the case. I have the habit of free-wheeling on long downhill stretches, and the errors have also also appeared with 0 revs but a speed of around 55mph.
The car is a 2010 Citroen C4.
Thanks in advance.