allwhitehonda

I get the trouble code 43 on my 3ab ecu

a chart i read said this would be primary o2 heater circuit malfunction. Is this common or is it most likley a wiring problom from the swap???

v4lu3s

it coul dbe wiring or a bad ecu, i would start by tracing wires.

and what ecu is a 3ab???

allwhitehonda

i think its a pr13 if my memory serves me correctley... i am having probloms with my o2 sensor as well i doubt that it is the sensor itsself most likley the wiring... it a civic cx which originally have a one wire o2 sensor looking at this o2 sensor it is plugged in and i dont see any bad wires but to test the problom were do the heater wires and the ground normally hook up too