I posted a while back about my engine light coming on and off for the past couple of months and finally got a chance to get it checked out. The dealer is telling me that one of my catalytic converters (the smaller one) failed! Everything is covered under the 80,000 mile exhaust warranty but it just seemed kind of odd to me. First off, I didn't even know we had two catalytic converters! Second, is this rare for a Tacoma with this mileage??