Showing a code p0420 replaced cat and both o2 sensors plugs wires seems to run good
Mar 18, 2013 at 6:29 PM
2001 Pontiac Montana Showing Code P0420 Replaced Cat Both O2 Sensors Plugs Wires
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There are many things that can cause this code to set. Most times you won't notice any difference in the vehicle unless the converter is melting down. Then you will notice a loss of power. Check out the link I attached for specifics about causes and and possible solutions.
https://www.2carpros.com/trouble_codes/obd2
Let me know if it helps.
https://www.2carpros.com/trouble_codes/obd2
Let me know if it helps.
Mar 18, 2013 at 6:40 PM
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