3.4L Bank 2 sensors?

Ok maybe a stupid question and I haven't went looking under the truck yet but I haven't seen anyone have o2 sensor problems on the bank 2 side and on my ODB scanner it doesn't show bank 2 on my live data. So does the 3.4 liter in the Tacoma's have a bank 2 side?

 

Yes, bank 2 would be cylinders 2 4 6 IIRC, there's a cross over tube that goes over the trans and drops on the passenger side into a Y collector, your bank 2 sensor is either on that cross over or just upstream of the Y collector before the two head's streams merge into the downstream combined O2's system.

 

Not in the case of the Exhaust sensors .

Unless your truck has headers and a complete dual exhaust system with 4 exhaust sensors it would need a stand alone engine management system.

in which case you live in a no emission state or the truck is not street legal.

 

Ok thanks I got it now. Didn't think about the exhaust coming back into one pipe.

 

Yea 1st gens only had 2 sensors B1 S1 and B1 S2.
All V engines have 2 banks but not all of them have o2 sensors on both banks, many older systems just used a single sensor.