Code P0432

BURR

MEMBER
JEEP WRANGLER

Hi I have a 2001 jeep wrangler set code p0432 this jeep has 4.0L motor it has two mini cats as well as the main cat jeep is running fine just has intermittent check light thanks for any help you can give me

Monday, February 27th, 2006 AT 11:42 AM

1 Reply

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

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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