1999 Toyota Tacoma Q&A

1999 Toyota Tacoma Question: WHAT ARE THE CODES FOR THE UPSTREAM AND DOWNSTEAM O2 SENSORS

I have a P0135 code which sensor is it -
Answer 1
which motor do you have? -
Answer 2
135 is the upstream or front sensor OR CIRCUIT! Check fuses as this circuit is for the 02 sensor heater which may have a bad fuse, possible. -
Comment 1
THANKS i'LL GIVE IT A LOOK -