2001 Pontiac Montana Repair Question
Topics covered: Sensor.
Mileage: 137,000 miles.
Mileage: 137,000 miles.
Asked on March 19, 2013
Pontiac Montana Sensor Problem
Showing a code p0420 replaced cat and both o2 sensors plugs wires seems to run good
Asked by (pending member)Answer
Replied on March 19, 2013
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.
http://www.obd-codes.com/p0420
Let me know if it helps.
