02 Sensor assistance
 

Hello All my name is DKHT I'm in Houston, TX
I am the original owner of a 2010 Toyota Camry XLE.
My issue is I have replaced a 02sensor the upper on the driver side and lower on the passenger side, however the check engine light remains on. I went to the auto parts store whom attached the machine a received a code reading of P0137 "02 sensor circuit low voltage bank 1 sensor 2".
My question is there another 02 sensor in the car and if so where?

V6 or 4 cylinder engine?

4 cylinder

Follow the exhaust pipe from the cylinder head. The second sensor is Sensor 2.

Was the check light reset after installing Sensor 2? If not how long have you been driving the car?

What was the brand and part number of the sensor installed?