Sisters Meriva's EML is illuminated. I can't remember what the fault code is (I had to write it on my hand last time I saw her), but when I looked it up, it sounded like there was a problem with the EGR valve. I will, of course, double-check it before doing much else.
Like many other things on this car, it seems inordinately difficult to change (I recently did the starter motor and flasher relay on it, and they seemed to be made perversely hard to get at), so I just want to do it once - replace it, rather than clean it out and see what happens.
But I see that there are blanking plates and EGR simulators for sale. Are these a better option? Doesn't it affect the readings at MOT time?
Thanks.