Quote Originally Posted by dhworkin View Post
Not working with chassis ground. What’s the grounding pin location at the PCM?
Just double checking, in the wideband zip folder there are instructions that must be followed exactly. If its not reading at all hooked to a good chassis ground something is wrong. I hooked to both to prevent a possible voltage offset, but no reading at all indicates bigger problems. I grounded to the pcm case mount and engine ground.