Quote:
Originally Posted by andrewc89
Yes, o2 sensors are known to go bad and cause these faults and they are much cheaper/easier to replace then catalytic converters so it's definitely worth a shot in my opinion to rule it out as a possible cause.
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Right but in my case the DP is under warranty so they will replace it for free. As for the instructions goes it asked to test the 02 sensors and show graphs. I'm not familiar with how this process works but the shop should be able to tell if it's bad right away right? Or are 02 sensors tricky to diagnose?