Code 43

[GalDemSuga]

I have this happening on both my trucks. Both trucks recently had the base timing set to "0".
On the 89 K5 this code occurs intermittently. On the 95 Yukon it occurs as soon as I start the truck. I never had this code before I correctly set the timing on the 89 K5, as for the 95 Yukon, I just bought it and never drove it before.

The book states the Code 43: ESC module not receiving a signal from Knock Sensor.

I tried to test the knock sensor by attaching a voltmeter to it and tapping it to see if there is a spike in voltage. It appears to work by that testing standard.

 

[DK5]

I never did figure out the problem with mine, but here is a thread that has some discussion about it. Hope this helps some:

http://coloradok5.com/forums/showthread.php?t=215245&highlight=code

 

[GalDemSuga]

I never did figure out the problem with mine, but here is a thread that has some discussion about it. Hope this helps some:

http://coloradok5.com/forums/showthread.php?t=215245&highlight=code

Thanks Buddy

I may have solved the issue on the Yukon. I pulled the Knock Sensor and cleaned it out with some contact cleaner. The code went away.

The K5 still has to be solved.

 

[resurrected_jimmy]

on my 91 burb I frequently had issues with the knock sensor wire getting chaffed or the connector being damaged