What is Code 43 for a 92?
Burning Brakes
Joined: Jun 2005
Posts: 861
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From: Hyde Park NY
St. Jude Donor '05
http://www.tradervar.com/GM_Codes.htm
43 Electronic Spark Timing (EST) Circuit - low voltage detected
?
Check this instead. not sure what the diff except this is more accurate for your year....
http://www.troublecodes.net/GM/92-93_57P.shtml
42 The EST circuit voltage was below 0.5 volts when engine speed was below 3000 RPM.
43 One or both of the knock sensors were either open or grounded for 5 seconds.
43 Electronic Spark Timing (EST) Circuit - low voltage detected
?
Check this instead. not sure what the diff except this is more accurate for your year....
http://www.troublecodes.net/GM/92-93_57P.shtml
42 The EST circuit voltage was below 0.5 volts when engine speed was below 3000 RPM.
43 One or both of the knock sensors were either open or grounded for 5 seconds.
Last edited by RAGOVET; Apr 6, 2006 at 12:25 PM.
Team Owner
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From: Fort Knox, KY
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Originally Posted by slicked25
I'm sure it's somewhat releated to me changing the upper radiator hose the other night. Does code 43 mean knock sensors?
Check the knock sensor connectors to see if they're loose or not connected. Check for grime, too. Also, did you remove the sensors? I believe the correct torque spec is 13 lbs. You may not have them in tight enough or have them in too tight. Check your Helms manual.
Thread Starter
Burning Brakes
Joined: Nov 2005
Posts: 1,211
Likes: 2
From: Dumas Arkansas
No, I didn't remove or touch the knock sensors. When I got in from work last night while ideling is when the SES light came on. Thanks. I'll go check it out before going to work.
