Hi guys need some help on possible causes for this code U0001 engine light on , scanned with forscan when light appeared and it says High speed can bus / communication bus module OBD2
I've been having lots of drivability issues albeit intermittent where it lacks power and acceleration, feels like it has a misfire under certain conditions and sounds as if it is knocking at times , up until now I haven't had any codes and have had the following things checked or replaced
Leak off test = all good
Smoke test = all good
Compression test = all good
Mass air flow replaced
Egr replaced
Regular oil and filter
Fuel filter
Air filter
My guess is it's an electrical issue as it is so temperamental, one minute it's great the next it drives terribly
I had a quick Google and apparently this module controls fuel injection ect so this might explain my issues??
I have looked on Forscan and I can't find this module to reset it , also I have no idea where to start looking for bad wires or connections ect so can anyone point me in the right direction please ? I must add that when the weather is really wet like it was today my van has more drivability issues and I noticed my PCM is soaking wet ! The van is a Euro 5 FWD 2.2 ... Hope somebody can help with this ? Thanks Carl