Originally Posted by
Gruntface
The glow plug to pcm circuit I believe is that my uvch is fried, yes maybe?
I'll save you some time on this one; no.
The glow plug control module communicates to the PCM through the engine wiring harness, not the valve cover harness. If you have a problem with the glow plug wiring through the harness under the valve cover, you will end up with individual glow plug failure codes.