Knock sensor code shows

Tiny
WARINGE
  • MEMBER
  • 1999 CITROEN C4
Im looking a buy at 97 gmc sierra. Knock sensor code shows on my code reader. Is that something to worry about? The truck is in mint condition and seems to run fine. But the code reader is reading a code and it say "knock sensor 1 circuit high input(bank 1 or single sensor). Is this something I should worry about before buying the vehicle, or is it and easy fix.
Wednesday, May 9th, 2012 AT 9:02 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be an easy fix if you replace the KS-but again could be a wiring to/from it or the computer itself
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Wednesday, May 9th, 2012 AT 10:12 AM
Tiny
WANGTINGEE
  • MEMBER
  • 1 POST
The Knock sensor is important, it keeps your pistons from burning up due to detonation(the pinging you hear on hills) it should be an easy fix though. It is a one wire circuit, and could just be disconected, or a bad sensor, and its not hard to replace. I would see if the seller will take care of it for you though.
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Thursday, May 10th, 2012 AT 2:28 AM

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