binkyrules

I got a P0031 code - H20S heater control circuit low bank 1 sensor 1
I had recently repaired a rat chewed wire (in picture ) and thought that might be reason for code. I have erased code twice and has come back both times after test driving for a bit.
I’m assuming might be another rat chewing problem at o2 sensor. Haven’t found an online resource to show me exactly where it’s located.
Thanks for your time.

chiph9

It's going to be below that area. Driver's side, ahead of the catalyst.

Chip H.

IanB2

Bank 1 should be driver's side, sensor 1 will be the pre-cat O2 sensor.

I'm glad we don't need to really worry about rat damage around here!