I am getting 2 codes o2 & catalist that are preventing emissions test in pa. The test can not be performed if there computer lists more than one system not ready for test. There is no check engine light and i have not disconnected the battery, totally stock ~24000mi. The car was reflashed 4 months ago when I had tps issues (they didnt believe me on the tps harness, (thank you D/F)until i was back the next day, then they replaced the sensor and harness). How many miles and at what speeds would have a chance of clearing the codes? The dealer tells me run it for 150miles of combo city/hwy driving. I really doubt this will help since it has seen 3000 miles of combined driving in the last 3 months. any suggestions as to what would be wrong?

 

o2 sensor might be bad

 

it needed a new cat. covered under warranty.