My service engine light has come on and a mechanic hooked it up and said it was Bank 1 Cat. Converter. They did not do anything further than read the code. I took it to advance and the read the same code. I am getting different things told to me the one mech. want to replace ...
Check Engine Light: What to check first, repair options 19-049 21-2381 1. Clearing the code and checking if it comes back: 2. Comparing the signals from the pre-cat air/fuel ratio (Front O2) sensor to the post-cat rear O2 sensor. ...