Peake fault code 1A
 

Hi have been having peculiar problems with my 325i 1992 , surging on idle

through a process of elimination have put it down to Mass Air Sensor ,

got another one on its way , funny thing is even when i disconect the MAS

i get no check engine light or anything . Used a Peake Scanner last night and got the reading 1A control unit supply , can anyone tell me what that is

that appears to be the only fault even when the MAS is disconnected.

Thanks Glynn
:(:(

Put new MAS on last night , running sweet as , scanned engine again still got error 1A , after 270 views on the post thought someone might have an idea
Thanks SmileWavy