How do you fix code 55knock signal circuit RH bank

Tiny
ROD J
  • 1993 LEXUS ES 300
  • 128,000 MILES

I change the knock sensors, throttle body, throttle position sensor, and the ecm. I had the negative battery cable disconnected and I pulled the efi fuse when I did all the work. The check engine light still comes on and goes off with the code 55 appearing.

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Tuesday, September 27th, 2011 AT 8:03 PM

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Tiny
ASEMASTER6371
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  • 25,554 POSTS

Wow, you replaced a lot of parts. In most cases I have seen, the connectors on the sensors are what fails. The end kit is about 30.
You really should have spent the money for a real diag from a shop. It would have prevented needless parts replacement.

Take a look at the chart I sent you for the code.

Roy

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Tuesday, September 27th, 2011 AT 8:10 PM
Tiny
ROD J
  • MEMBER

Thanks a lot, I'll definitely look for that kit.
Rod J

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Tuesday, September 27th, 2011 AT 8:17 PM
Tiny
ASEMASTER6371
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Good luck

Roy

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Tuesday, September 27th, 2011 AT 8:19 PM

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