Code 42 EST

[Jax ZR1]

Originally Posted by -=Jeff=-

Yes there are hard to find. Jerry is working on a replacement and I have a custom one in my car

Ok I will be as careful as I can thanks again everyone

[XfireZ51]

Originally Posted by Jax ZR1

I took a photo of the pins after I got the plug off and it looks like a bent pin, will need to pull the plenum again to work on it. Anyone ever have luck reusing the plenum gaskets only been in a few days, don’t like doing that but don’t have access to new ones for a week or more. Thanks for the help and hopefully this works

Ur not the first one to have this happen. We all get excited to put the damn thing back together and get it running. Those pins are delicate. Care needs to be taken to ensure they’re inserted properly. If it don’t fit don’t force it.

[Jax ZR1]

Just finished doing it again and I’m still getting the same code, so tomorrow I’ll check it with multimeter and hope I can find the problem

[-=Jeff=-]

Yes run down the Diagnostic tree I posted (2nd page)

Let us know what you find

[Jax ZR1]

So this car has a gremlin in it, made an appointment at the closest chef dealership to Check the code 42. Got up this morning to make the hour drive and the car started fine idled great, better then it has since I bought it ran good could feel the secondary working, made the hour long drive no problems stopped to fill up with gas and then it wouldn’t start push started it and then the check engine light came on right away and the idle started going up and down again. Drove it to the shop and that’s where it sits, and I’ll wait and see what they say not a lot of hope right now. It the way I put a brand new starter in when I did the injectors.

[G8nightman]

O no not the dealer cant wait to hear what they come back with.

[lfalzarano]

Code 42 is the Selective Ride Control Switch - open contacts. It will set if the switch is not properly positioned in one of the three detent positions? It shouldn’t make the engine run rough? There must be another code that you haven’t read.


Sent from my iPhone using ZR-1 Net Registry

[Jax ZR1]

My shop manual says a code 42 is electric spark timing . I’ll wait and see what the shop says, was really happy this morning when the car was running the best it has since I bought it and then just like that back to the same old crap again.

[-=Jeff=-]

Originally Posted by lfalzarano

Code 42 is the Selective Ride Control Switch - open contacts. It will set if the switch is not properly positioned in one of the three detent positions? It shouldn’t make the engine run rough? There must be another code that you haven’t read.


Sent from my iPhone using ZR-1 Net Registry

Originally Posted by Jax ZR1

My shop manual says a code 42 is electric spark timing . I’ll wait and see what the shop says, was really happy this morning when the car was running the best it has since I bought it and then just like that back to the same old crap again.

Both are correct.. if I am troubleshoot a Check Engine light.. 42 is EST

if I am checking the SRC system, 42 is SRC switch, open.

Jax, I assume you are jumping A and B on the ALDL, not A and C.

[-=Jeff=-]

Hey Jax,

did you check the MEMCAL in the ECM? Check to be sure it is fully seated. Also when you straightened the pin, was it still solid?