2003 Toyota Corolla 4 cyl Wheel Drive Type unknown Automatic 88400 miles
I had a diagnostic test done at Autozone because my check engine light is on. The trouble code was P0420 or catalyst system below threshold (bank 1). Should I have the catalytic converter or the oxygen sensors replaced?
have the same problem?
Tuesday, December 18th, 2007 AT 4:56 PM