I have a 2002 Pontiac Grand Am 2.2L. The check engine light is on. When diagnosed it said the o2 sensor was bad post cat converter. The part was replaced and light reset but light came back on. When diagnosed again it said the o2 sensor was still bad. Is there something else that needs to be replaced?
have the same problem?
Saturday, March 19th, 2011 AT 2:22 PM