Further to my note about my 520i '95 Touring a few days ago running flat as a pancake, no power etc etc, the local (non-BM) garage say its coming back with an error code of 54 when they plug their diags in.

Anyone have an idea what fault this code relates to please?

They looked in their book and it listed fault descriptions for 1-53, and 55-200+ but a blank for 54!

TIA
Rick
(wishes he'd hung on to his 750i and Merc 300TE instead)