Cel code: H02s12

[TFJ-4runner]

Definition
Heated oxygen sensor - bank 1 sensor 2 (HO2S12) circuit fault *P0136*

Probable cause:
- Open or short circuit condition
- Poor electrical connection
- Engine mechanical fault
- EFI relay fault
- Faulty heated oxygen sensor - bank 1 sensor 2


Just got this code on the way home tonight coming from the bank. It's on the 96 I recently just purchased 5VZFE. Before I go into searching for the exact culprit does anyone have experience with this code and how did you fix it.


Thanks in advance,

TFJ

 

[TFJ-4runner]

Pretty sure I found what I need but any input is still welcomed.

http://www.ncttora.com/fsm/2003/Repair_Manual/03tacoma/di/eg5vzfe/cip0136.pdf