I was needing help on an ow sensor code and the code is p0140 (o2 heater circuit bank 1 sensor 2) I'm using my solus pro and monitoring the 3 sensors and bank 1 sensor 1 and bank 1 sensor 2 are normal reading at .02v to. 07-.08v and bank 1 sensor 2 (the 3rd Se... Login to read more.