C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

What to do code 42?

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Old Nov 24, 2002 | 05:59 PM
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Damien89
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Default What to do code 42?

Today i got a code 42, what do i have to do to fix it? Last night i started the vette in the dark and opened the hood and saw a sparkplug wire getting sparks out,then i re attached it with the spark plug. Could this be the cause?

Thanks for your support! :cheers: :chevy :cheers:
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Old Nov 24, 2002 | 06:25 PM
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Default Re: What to do code 42? (Damien89)

Code 42..Electronic spark timing circuit (EST)
"Check wiring at ignition module. Replace ignition module. Possible ECM failure."
It is possible that your loose wire caused the code. Clear your codes by disconnecting the negative side of your battery, reconnect after a few moments, and see if your code 42 is still showing.
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Old Nov 24, 2002 | 06:55 PM
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don hall
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Default Re: What to do code 42? (Damien89)

Damien89, here is a link that will provide you with code info in the future, along with other C4 data:
http://www.c4vettes.com/indepth_launch.htm
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