CEL 23knock sensor issues.

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04-19-2012, 07:26 PM

ek9+

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CEL 23knock sensor issues.

I have a 97 civic hatch with obd2 b18c throwing cel code 23( knock sensor) I replaced the knock sensor reset Ecu and still have this issue. Any suggestion on what to do. Thanks

04-20-2012, 05:06 AM

Fabrik8

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Re: CEL 23knock sensor issues.

Check the wiring very carefully.. If that doesn't work, try another ECU.

04-28-2012, 05:30 PM

ek9+

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Re: CEL 23knock sensor issues.

Quote:

Originally Posted by Fabrik8

Check the wiring very carefully.. If that doesn't work, try another ECU.

does it on multiple ecus. and has brand new KS. and cant find any problems w/ wireing as far as i can see.

04-29-2012, 04:46 AM

TRQLESS

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Re: CEL 23knock sensor issues.

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Originally Posted by ek9+

does it on multiple ecus. and has brand new KS. and cant find any problems w/ wireing as far as i can see.

Are you using shielded wire for the knock sensor? The knock sensor wiring MUST be shielded so that it doesn't get interference from other things.

04-29-2012, 07:42 AM

Fabrik8

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Re: CEL 23knock sensor issues.

You've replaced the knock sensor, you've replaced the ECUs, so therefore the problem must be with the wiring. Grab a multimeter and check continuity on the wiring, and yes you should be using shielded wire for interference rejection.