DTC Code:p-0141 Which o2 sensor is it??? [Archive] - GrandAmGT.com Forum

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rap219
04-09-2007, 05:51 PM
Got a reading from the obd-II on my friends car and it gave us number p-0141 which means "HO2S Heater Circuit Bank 1 Sensor 2" Would this be the front or the rear o2 Sensor? What exactly does Bank# and Sensor# mean...I'm guessing someone knows, And i don't want to replace the wrong sensor.

gectek
04-09-2007, 06:34 PM
they are generic codes for any number of vehicles, bank 1 is usually the side of the #1 cyl, and bank 2 is for the # 2 cyl side, but the GA only has 1 upstream O2, also sensor 1 is upstream and sensor 2 is further down and sensor 3 would be the last one, but since the GAs only have 2 sensors, then the bank 1 sensor 2 is the post cat sensor or what is called the catalyst effeciency sensor.

rap219
04-09-2007, 06:42 PM
So in idiot terms.... the rear o2 sensor after the cat....

gectek
04-09-2007, 06:43 PM
thats what i said...lol

rap219
04-09-2007, 06:49 PM
Sweet man, Thanks

Just out of curiousity what would it say if it were the front one? bank 1 sensor 1?

gectek
04-09-2007, 06:50 PM
ur catching on, yup

rap219
04-09-2007, 06:51 PM
Okay, Thanks a bunch bro...