Code 42

[SCOOBY DOO]

Swap in a known good ECM and report back.

 

[hensleyt]

I believe it a wiring harness problem you said you have some pin problems.

 

[hensleyt]

Took some offline advice and changed the crank sensor.

save that part the only relationship it has to your problem is its 2 feet from the ignition module

 

[That GN Guy]

Rebuilt Delco pcm from rock auto is in, problem solved!

No idea how that was possible, never hit bad pcm on the tree with any parts. But hey, now I have a few "known working" parts laying around

I let it run for 10 minutes or so with no codes, we'll see how it runs when I have the time to take it out for a spin.

Thanks for the help everyone, this forum is great.

 

[turbojay]

Rebuilt Delco pcm from rock auto is in, problem solved!

No idea how that was possible, never hit bad pcm on the tree with any parts. But hey, now I have a few "known working" parts laying around

I let it run for 10 minutes or so with no codes, we'll see how it runs when I have the time to take it out for a spin.

Thanks for the help everyone, this forum is great.

Make sure to take it for a long drive. The pcm in mine always failed after the car was driven 20-30 miles. Hopefully your issue has been resolved.

 

[That GN Guy]

Took it for a drive tonight, maybe 30 or 40 minutes. Didn't get a CEL and the car ran great.

 

[MONSTER GN]

Good thread, giving it a bump so I can return to it later after running through the flowchart. MAL Code 42 constantly illuminated, loss of power, and returns immediately even when battery disconnected, will advise my findings if I ever get any free time to poke around at it.

 

[MONSTER GN]

Well this is as far as I got and boy did I make this thing mad when clearing the codes,no other codes present, seemed to have misplaced my turbo tweak code list sheet, but now it appears alternator not charging and my knock is through the roof

 

[MONSTER GN]

Well this is as far as I got and boy did I make this thing mad when clearing the codes,no other codes present, seemed to have misplaced my turbo tweak code list sheet, but now it appears alternator not charging and my knock is through the roof

Update, alternator figured itself out, we're good there, but still displays excessive retard degrees even tho functioning knock gauge shows nothing, any ideas where to start now? Also after reaching "yes" I cleared code again, this is probably no the proper procedure? If incorrect and after I get code to set, I then get to move to yes since code 42 is still displayed on scan master and brick scanner.