PearlLex Posted August 3, 2004 Posted August 3, 2004 Should you reset the car after you install a new o2 sensor?
PearlLex Posted August 3, 2004 Author Posted August 3, 2004 i was just wondering because i got scared that i changed the wrong o2 sensor. but i took the fuse out today and it did not reset the trip meter or clock, but the check engine was off after that. i guess i'm just goign to have to drive it around to see if it comes back on. usually after being reset it would come back on within 100 miles.
steviej Posted August 4, 2004 Posted August 4, 2004 usually you don't have to. once the new or cleaned O2 sensor starts sending the correct signals to the ECU, the ECU should deactivate the CEL. Pulling the engine fuse or disconnecting the battery is just treating the symptom. Replacing the O2 sensor was treating the cause. Many people revert to pulling the code as soon as they see the CEL. If the original problem still exists, the CEL is only going to come on again. It is best, like you did, to get the code read and try to resolve what caused the CEL in the first place. steviej
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