P0432 Main Catalyst Efficiency Below Threshold (Bank 2)
This engine code can be triggered by any one of the following:
1.) The catalyst in the catalytic converter is cracked, clogged, or otherwise damaged.
2.) The secondary O2 sensor is malfunctioning.
3.) There is an exhaust leak.
4.) The computer unit is faulty
Need to have converters flow tested. Also need to check oxygen sensors. To learn how to check an O2 sensor, follow the link below..
https://www.2carpros.com/how_to/how_to_test_oxygen_sensor.htm
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Wednesday, March 4th, 2009 AT 11:06 AM