so i have an 05 ss supercharged and I'm getting a p0135 and it said bank 1 sensor one i know its a bad 02 i know there is an 02 right after the cat and that there is 1 on the back of the motor is it the one in the back of the motor or is it one I'm not seeing and any recommendations on where to get a repacment 02

 

P0135 indicates there is a problem with the heater circuit of the O2 sensor. Possible causes can be:

A short or open circuit in the heating element wiring harness.

Excessive resistance in the heating element circuit.

An internal open or short in the heating element itself.

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Bank 1 sensor is the front sensor prior to the cat converter.