As vehicles accumulate mileage, the catalytic converter deteriorates. The deterioration results in a less efficient catalyst. To monitor catalytic converter deterioration, the fuel injection system uses two heated oxygen sensors: One sensor upstream of the catalytic converter, one downstream of the converter. The PCM compares the reading from the sensors to calculate the catalytic converter oxygen storage capacity and converter efficiency. Also, the PCM uses the upstream heated oxygen sensor input when adjusting injector pulse width.
Basically the code p0432 means that the oxygen sensor
Downstream of the catalytic converter on bank 2 is detecting that the converter is not working as efficiently as it should be'. The catalytic converter is no longer functioning properly.
An oxygen sensor is not reading (functioning) properly
There is an exhaust Leak ,air leaks in at the exhaust manifold or exhaust pipes
Front O2 older (aged) than the rear O2 (O2 is lazy)
Bank 1 refers to the side of the engine
that has the #1 cylinder. Bank 2 is the opposite side of the engine and that is where the problem might be.
Monday, March 1st, 2010 AT 11:57 PM