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If your sensors were contaminated with something, it's possible to have them all go bad at different times. Did you change anything recently? How many miles?
does it make sense that if you replaced the rear sensors that then the front sensors would blow soon thereafter?
Are they all the same age? Probably just a coincidence that the fronts went after the rears. It's unlikely that the rears would cause the fronts to go bad because they are just there to gauge how efficient the catalytic converters are. So I vote for coincidence.
yep, check engine light was on both times. When the back went and when the front went. I'm just wondering how much the dealer would have charged me for the $800.00 the regular mechanic charged me. And hopefully the mechanic was being honest.
