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)
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
ANSWER by on June 06, 2010
replace downstream O2 Sensor
COMMENT by on March 30, 2011
ANSWER by on June 20, 2010
Replace the two front oxygen sensor

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