Knock sensor trouble code
Knock sensor trouble code I have a 95 Z28 and the service engine soon light is on so I took it to the shop and they put it on the scanner and the code that came back was knock sensor wiring harness. Not the sensor itself. So today I crawled underneath and checked to make sure the plug was in correctly to the sensor and it was. I have the ground going to an oil pan bolt so I put a test light on it and it lite up when I put the clip side on the hot wire to the starter. That means its grounding correctly right?? Does anyone have a correct wiring diagram for that area or know for sure where that ground is supposed to go? I unhooked the battery to try and reset the comp but the ses light still comes on. Any ideas or suggestions would help. Thanks
I have a 95 Z28 and the service engine soon light is on so I took it to the shop and they put it on the scanner and the code that came back was knock sensor wiring harness. Not the sensor itself. So today I crawled underneath and checked to make sure the plug was in correctly to the sensor and it was. I have the ground going to an oil pan bolt so I put a test light on it and it lite up when I put the clip side on the hot wire to the starter. That means its grounding correctly right?? Does anyone have a correct wiring diagram for that area or know for sure where that ground is supposed to go? I unhooked the battery to try and reset the comp but the ses light still comes on. Any ideas or suggestions would help. Thanks
I would clean up the connector to the knock sensor and I would trace that wire all the way back to the computer and look for burns, rips, or corrosion. I'm not sure how to test it with a volt meter. Have you tried testing if for power with one clip on the connector and one clip to the block?
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TECH Veteran
Joined: Dec 2008
Posts: 4,147
Likes: 62
From: Little Rock, AR
http://shbox.com/1/4th_gen_tech2.html#knock_sensor
The ground wire that is in the loom with the starter and knock sensor wires grounds to a lug on the block. Grounding it to an oil pan bolt should accomplish the same thing.
The ground wire that is in the loom with the starter and knock sensor wires grounds to a lug on the block. Grounding it to an oil pan bolt should accomplish the same thing.
On The Tree
Joined: Sep 2007
Posts: 177
Likes: 0
From: San Antonio, TX
http://shbox.com/1/4th_gen_tech2.html#knock_sensor
The ground wire that is in the loom with the starter and knock sensor wires grounds to a lug on the block. Grounding it to an oil pan bolt should accomplish the same thing.
The ground wire that is in the loom with the starter and knock sensor wires grounds to a lug on the block. Grounding it to an oil pan bolt should accomplish the same thing.
I don't know if this has been mentioned before, but if not I am surprised.
*I officially turn this thread back over to the OP, sorry for the hijack.