Check engine light came on with code specific to Bank 1 02 sensor. Had that changed, month later light came back on again, same code. 02 sensor was replaced (in case of defectiveness)2 days later check engine light is on again. Heading in to have it read. IF the code comes back as Bank 1 02 sensor, does that mean the catalytic converter needs to be tested to see if it's triggering the error. I read previous q&a's and there was one that was suppose to link to a page discussing this but the link does not work.
thanks for the help,