How Can I Tell My Catalytic Converter Is Bad?

I own a 2002 Mitsubishi Galant 2002 DE with 158,000
yesturday the check engine light came on and i had it scanned and they told me it was the catalytic converter but they said sometimes they glitch and the check enigne light comes on so they reset it and told me to go back if it came back on.
my car drives good it doesnt stall or anything so im hoping it was just a glitch.
how could i tell if my catalytic converter is really bad?
Posted: June 14, 2013

Best Answer

The code please. A code that states catalyst not reaching threshold usually is a bad converter. Normal procedure is to use a scan tool (not an OBD II code reader) and check the voltages and switching times of the front and rear 02 sensors to confirm the converter is not working.

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