Check engine light was on in my vehicle, so based on some of the reviews I took it to Bob's because I thought they were a reputable place to go. WOW, was i wrong!! After they gave me a laundry list of things that were supposedly wrong with my vehicle they also informed me that the O2 sensor was bad. O2 sensor is fine, it's a wiring issue, which I diagnosed with a mechanic friend of mine. I really appreciate paying Bob's $120 to "diagnose" a problem and not get it right!