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

Code 43 esc

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Old Nov 1, 2021 | 04:44 PM
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Eduardo L98 1991's Avatar
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From: Acapulco Guerrero
Default Code 43 esc

HI,

Please help me with this

my engine sudenly stops, afetr no spark test I replaced coil , engine starts but I have service negine soon lamp, with tuner pro scanner reads code 43

code 43 can be esc or knock sensor

I replaced the coil with a new prstolite c833, that the only one that I found locally

can be posbile that esc module is defective too and this is the reason of error code ?

________________________________________ _______________________

car was running properly , but I founf that the timing conector was unhook, this can be the reason of coil esc problem ?
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Old Nov 1, 2021 | 04:57 PM
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Yes. But first, unhook the battery for a while then reconnect, this will clear your codes. Then see if the car is running correctly with the EST timing connector re-attached. If you still receive a new code 43, then research further.
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Old Nov 1, 2021 | 05:08 PM
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Eduardo L98 1991's Avatar
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Errors code was cleared several times with scanner, also I disconenct battery for a while
the error code is inmediatly

Last edited by Eduardo L98 1991; Nov 1, 2021 at 05:11 PM.
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Old Nov 1, 2021 | 05:13 PM
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Do you have a Factory Service Manual to further troubleshoot the issue?
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Old Nov 1, 2021 | 05:18 PM
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Originally Posted by ajp01
Do you have a Factory Service Manual to further troubleshoot the issue?
no I dont
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Old Nov 1, 2021 | 05:28 PM
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Click on upper left corner for additional info:

https://www.corvettebuyers.com/c4vettes/codes.htm
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