Happened to me 2x today; both times after driving the car for over an hour at a time. My A/F guage is still working properly. It happened both times while going a steady 50-55mph; and the ECU resets itself after I turn the car off/on... Bad o2, or WTF is going on? I though bad o2, but my A/F guage is still working fine, even after it throws the CEL.

jB

Bad o2!

BTW, how do you know your AF gague is even giving you accurate info??

Bad O2 IMO.

borrow a friends and see if you still get the CEL. I've found Honda ECUs are seldom wrong.