HOW DO YOU FIX CODE 55(KNOCK SIGNAL CIRCUIT RH BANK)
1993 Lexus ES 300
September, 27, 2011 AT 8:03 PM
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.
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.
September, 27, 2011 AT 8:17 PM
Thanks a lot, I'll definitely look for that kit.