2001 Mercury Marquis Engine Code for possible bad Cat.

2001 MERCURY MARQUIS
129,000 MILES • V8 • 2WD • AUTOMATIC
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The check engine light is on, my scanner shows a code of P0430 which indicates a possible bad catalytic converter or a bad O2 sensor. Don't know which. The car runs normal. What is the harm of not getting this repaired?
Mar 27, 2010 at 9:40 AM
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JACOBANDNICKOLAS
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If it is running good and hasn't lost power, chances are the catalytic converter is good. However, if you have a bad O2 sensor, it can cause higher fuel consumption, driveability problems, damage to the catalytic converter...
Jun 10, 2010 at 8:01 AM