12-01-2016, 02:43 PM
Join Date: Oct 2007
Location: FraserValley, BC, Canada
need to be change together with the O2 sensor.
This is not correct.. get a new mechanic!
The code relates to the pre CAT O2, there may be several reasons for the Bias code.
It is important to check the live DATA of the B1S1 and fuel trims before embarking on flipping parts.. Especially expensive one like the CAT, Proper diagnosis is imperative..
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