The check engine light is on. Had the Trani replaced at the Dealer. The light was off for a day, then it turned on. Auto Zone ran diag. and found code P0420. It listed 4 possible. 1. A/F Ratio Concern. 2. Air leak near H02s (heaten oxygen sensor) zone 1.
3. Ignition system conern. 4. Faulty catalytic converter. I was wondering if I could fix this myself but do not know where to start? Or, should I give this to a professional?
3. Ignition system conern. 4. Faulty catalytic converter. I was wondering if I could fix this myself but do not know where to start? Or, should I give this to a professional?
Feb 21, 2010 at 10:30 PM
