So I had my indy replace one oxygen sensor after the code tripped for same. He also did Inspection 2 for me due to mileage - 60k. So after driving my 2006 home, with all codes clear, the following day the SES light trips again for bad oxygen sensor. I return to my indy and he tells me that one of the other o2 sensors needs replacing. WHA!!! Is it possible he ripped me off, or that another sensor went in that little time? What indy does not check to be sure all codes are clear? Now he wants another $270 to replace the sensor. Same guy who was going to charge $400 to replace the MAF, but I told him that I would do it myself since it is a 5 minute job and a $170 part, so he said he would do it for $200 also. Do I dare go back to him for the o2, or do I call him on failure to repair the original SES light? Thanks!!!