Code C43

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Jul 4, 2006 | 01:45 AM

jabez

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From: Milpitas ca

Code C43

On a 1992.
What is that?

Jul 4, 2006 | 02:46 AM

slicked25

Burning Brakes

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From: Dumas Arkansas

Code 43 is knock sensors.

Jul 4, 2006 | 08:45 AM

MikeC4

Melting Slicks

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From: Austin Texas

with CA gas prices skyrocketing, are you running lower octane fuel which will give put your knock sensor to the test?

Jul 4, 2006 | 09:02 AM

jabez

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From: Milpitas ca

Quote:

Originally Posted by MikeC4

with CA gas prices skyrocketing, are you running lower octane fuel which will give put your knock sensor to the test?

uhhh...no . running 91 octane.

Jul 4, 2006 | 01:06 PM

bogus

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From: San Pedro CA

I would say you need to check the wiring, and worst case, replace the knock sensors.

Jul 4, 2006 | 08:48 PM

jabez

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From: Milpitas ca

Quote:

Originally Posted by bogus

I would say you need to check the wiring, and worst case, replace the knock sensors.

Whats a knock sensor cost?

Jul 4, 2006 | 08:59 PM

MikeC4

Melting Slicks

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From: Austin Texas

about $30 from Ecklers.

http://www.ecklers.com/find.asp?

Jul 4, 2006 | 10:41 PM

bogus

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From: San Pedro CA

cheaper from NAPA.

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Jul 5, 2006 | 10:45 AM

onedef92

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From: Fort Knox, KY

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Don't get the cheapie Bosch from AutoZone. Use only Denso or AC/Delco/Delphi or you might be sorry.

http://www.buyautoparts.com/gm-parts/

And don't throw money at parts. Make sure you have a defective 02 sensor and don't assume one or both of them (your LT1 has two) have gone ****-up. This is where an 02 sensor test tool or a scan tool comes in handy and pays for itself.

Jul 5, 2006 | 04:36 PM

#10

jabez

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From: Milpitas ca

I am only getting the SES light only when I start her up. After two or three minutes of driving the SES light disappears. Drives fine.

Jul 6, 2006 | 08:17 AM

#11

onedef92

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Quote:

Originally Posted by jabez

I am only getting the SES light only when I start her up. After two or three minutes of driving the SES light disappears. Drives fine.

Inspect the connectors then. Sometimes they get fouled with oil and grime this will cause them to throw a code. That was the case on my Vette.

Jul 6, 2006 | 12:52 PM

#12

MTVette

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From: Marlboro country MA

On the other hand, my 92 was throwing Code 43's and lighting the SES light intermittently upon startup. A replacement of the knock sensors permanently fixed the problem.

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