ouch and double ouch...my advice would be to go have your codes checked again and then come back here and let us know what codes were pulled...this site is great at helping with codes
autozone is good for getting them read for free but it doesn't necessarily mean that the person doing it is reading it correctly or can advise on a proper fix
the codes are not necessarily exact, but more of an indicator as to where to look to remedy the problem...may be something else going on with the car that doesn't absolutely have to be the o2's
u can also try to clear them as stated in the previous post
if u remembr what codes were pulled post them here
good luck and welcome
99 expedition eddie bauer, 5.4 v8, k&n drop-in, 3" magnaflow catback and gas mileage that makes the contour look like a hybrid
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