I had the codes read when my check engine light came on, the dealership said bad O2 sensor. So I changed them both. Within two days the light was back on and I took it to O'reillys and the same codes came up. I replaced both sensors again. This morning when I started the car it backfired out of the tail pipe and the light came on again. Could it be the catalytic converter that needs to be changed?
have the same problem?
Monday, April 16th, 2018 AT 7:03 AM