The 93 van I just bought is showing a 12 and 45 fault followed by the 55 end of check. According to Allpar 45 is for turbo cars only, what's up with mine, 5.2 FI Thanks
Bruce
12 will show if yor battery has been disconnected recently, sort of a no issue. 55 signifies the end of the codes, nothing there.
45 is the one to search out, and my info says your boost is out of range.