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E39 asc fault

 
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brentw1



Joined: 20 Jan 2005
Posts: 4
Location: Nottingham UK
PostPosted: Mon Jan 24, 2005 2:53 am    Post subject: E39 asc fault Reply with quote
Hi folks, I have a 1996 e39 and I am getting the asc warning light coming on generally after about 5 miles. The system is taking itself off line for some reason. The fault being recorded is "A38 - control unit plausibility" but no one at my local garage can find out what this actually means. The abs system is unaffected and works OK, so presumably not a sensor as I understand that both systems use the same sensors. Can anyone suggest a remedy that will not run to hundreds of pounds! Found the symptoms recorded on a diagnostic site as being those for non-standard wheels and tyres but mine are and always have been the original 15" equipment. Cheers Brent
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