Jay Don
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I have 115,000 miles, once in a while the light may go off but it comes back. Don't the O2 sensor have a different code
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My engine light on my 2001 GS430 is on. When I went to the mechanic he told me the computer say it is PO420 Catalyst Efficiency Below Threshold bank 1 and 2, and that each convertor would be $1,250 each. My car runs excellent so it was hard for me to believe that it could be bad. Can anyone tell me were to find a cheaper catalyic convertor or can it be the sensors.
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My engine light on my 2001 GS430 is on. When I went to the mechanic he told me the computer say it is PO420 Catalyst Efficiency Below Threshold bank 1 and 2, and that each convertor would be $1,250 each. My car runs excellent so it was hard for me to believe that it could be bad. Can anyone tell me were to find a cheaper catalyic convertor or can it be the sensors.
