PO431: Warm-Up Catalyst Efficiency Below Threshold (Bank 2) Look at the O2 sensor output signals. Sensor 1 is before the converter, Sensor 2 is behind the converter, Bank 1 and 2 are typically used in
po431 warm up catalyst efficency below threshold bank 2 what does this mean this is an o2 sensor fault,this is the one after the cat.,so there could be two thingd goin on, First the catalytic ...
...PO431 catalytic converter Bank 2. They say it'll cost me at least $1000 to fix it. Is this correct? Anyway around it? Or could it be something else. their are 2 O2 sensors one before the cat and one ...
...PO431 1. Warm up TWCBank 2 2. TWC Bank 2 Can Anyone Please Help? P0431 = Cat below threshold.Driving at mid RPM range for half an hour may help to regenerate the Cat but it may well be damaged from ...
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