Check engine light came on and was told it was the air sensor. The cost (over $200) kept me from replacing it, but according to another post on this website, when they paid the cost for replacement, it didn't help. I replaced the gas cap because they said it could be one of the causes....it didn't help. Was told to replace the plugs, so I had all of them replaced....it didn't help. Was told to replace the catalytic converter, so I had it replaced...it didn't help.

Does anyone know how to fix this problem? Please let me know. Thanks.

Okay here goes,app. 3weeks ago check engine light comes on, shows bank 1 oxygen sensor is bad,replaced@$200.00. Still comes back on 40 miles later, mechanic said that the catalyst code still shows has to be bank 2 sensor OR catalytic converter,replaced both,( after market converter) yep, light came back on! replaced plugs, air filter,YES, the light is still on, by the way it is TRD, California emissions equipped, now inspection is out, tags are out, and can't get either till problem is fixed.PLEASE if you know what we need to do, TELL ME!! we can't afford much more,please help,feel free to e'mail me @ thechairmanrepairsa@yahoo.com.Thank you!!