P0432 Main Catalyst Efficiency Below Threshold (Bank 2) on 2001 Dodge Intrepid

P0432 Main Catalyst Efficiency Below Threshold (Bank 2) What should I do to fix this?

by in Maspeth, NY on January 25, 2010
4 answers 3 comments
ANSWER by on January 26, 2010
Here is some info and other similar questions asked about the P0432 DTC http://repairpal.com/search/p0432 : Trouble Code: P0432 Catalyst Efficiency Below Normal (Bank 2) Trouble Code Conditions: Engine speed at 1200-1700 rpm in closed loop with the throttle open for over 2 minutes, ECT Sensor more than 147ºF, MAP Sensor signal from 15.0-21.0" Hg, and the PCM detected the switch rate of the rear O2 reached 70% of the switch rate of the front O2. Possible Causes: * Air leaks in at the exhaust manifold or exhaust pipes * Base engine problems (high coolant or engine oil consumption) * Catalytic converter damaged or has failed * Front O2 older (aged) than the rear O2 (O2 is lazy)
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COMMENT by on November 07, 2010
The po432 code is on it does have high coolant consumption
COMMENT by on August 14, 2011
I was haveing codes p0121 and p0123 with p0432, now that the TPS has been changed and a tune up has been done the p0432 has not come back and if it come back what should i repair?
ANSWER by on April 19, 2010
How much would it cost to fix this problem
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ANSWER by on June 06, 2010
replace downstream O2 Sensor
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COMMENT by on March 30, 2011
WHAT IS THE DOWNSTREAM 02 SENSSOR
ANSWER by on June 20, 2010
Replace the two front oxygen sensor
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