cel help

[Slugger25]

my car is throwing the code below, what is the fix? 97 GT with o/r x pipe.

P0135 Upstream Heated Oxygen Sensor Heater circuit fault - Bank No. 1.

 

[duff daddy]

Pretty self explanitor. One thing check wiring, make sure its not chaffed, damaged or corroeded, check connections for the same. If all looks ok then replace the bank 1 o2 sensor

 

[vermilion]

craptastic o2 sensor homie. left side front o2.