Check engine light has turned on.
Mechanic I trust said code indicates the catalytic converter is bad (code is P0420). He said that code is pretty straightforward as far as trouble goes. He turned light off, but it came back on about a week later.
Is there anything short of a bad converter that would turn the check engine light. Car has 170000 miles, purchased new.
1996 Camry, 4 cyl AC, PB, PS Auto trans