Mechanics

HOW DO YOU FIX CODE 55(KNOCK SIGNAL CIRCUIT RH BANK)

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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Rod j
September 27, 2011.




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


ASEMaster6371
Sep 27, 2011.
Thanks a lot, I'll definitely look for that kit.
Rod J
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Tiny
Rod j
Sep 27, 2011.
Good luck

Roy


ASEMaster6371
Sep 27, 2011.

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