Thank you for your reply.
I have changed the alternator regulator and all seems well now.
NB. The regulator was changed previously (about a year ago) but with an after-market part.
I have fitted a genuine Bosch one this time.
Can anyone advise?
I have a sprinter 906 that has an intermittent dash warning light (red battery symbol).
Diagnosis with an iCarsoft MBII gives fault code: G2/7 (Alternator with LIN bus) - Communication fault. (see photo).
Does anyone know: a) if I replace the alternator, will it clear the...