MIL on about 80 miles after main service, no difference in engine performance or misfire noticeable. Checked fault codes with MT PRO, fault code PO171 fuel trim bank 1 system too lean. This may be a known fault to some members, but thought it worth a post

Discovered that there are different fuel filters that look identical but one has 3 bar rating and the other is 4 bar. I had replaced mine with a FRAM FILTER with 3 stamp NB this was only one listed in their applications but they do make a 4 bar filter so fitted this and no more problems after 400 miles

Geoff Taylor.
FIXED