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Error code 1-4-3 knock sensor always comes back, 93-940 -B230F

posted by  CarlosR on  Wed Sep 12 01:34 CST 2007
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last visit: Mon Jun 1 15:19 CST 2009
[RELATED]

This check engine light started bugging me and the computer told me it was error code 1-4-3 (knock sensor at fault), I bought a new one and replaced it but the same error comes back every other week after clearing the computer memory so it should not be the same sensor again.

I have tried with different gasoline octane (87-89-93)and it seems to disappear when using 93 octanes although I am not so sure, besides, the car runs smoother, quiter with 87 octanes....and it's cheaper too.

Is this error code related to something else?? I plan to replace the ECT sensor just in case, with 210 Kmiles in its ribs it'll be good anyways.

B230F, non turbo wagon....runs great in general.








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    Error code 1-4-3 knock sensor always comes back, 93-940 -B230F

    posted by  bcg on  Thu Mar 14 04:51 CST 2013
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    last visit: Sun Jul 27 08:12 CST 2014
    [RELATED]

    carlos,
    i was having the same problem. from a tip through another person, i replaced my wiring with shielded 18 gauge cable with ground wire.

    i found a crack in my original wire insulation near the connector to the knock sensor, which probably shorted on occasion and caused the code to be thrown and caused my 940 to idle rough on damp mornings.

    i replaced the wiring last week and i haven't had any problems since.

    regards,
    byron golden
    86 245
    92 245
    94 940







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