what code(s) will come up when an oxygen sensor is faulty?

Question

I was just wondering if there are certain codes to watch out for that will let me know if an oxygen sensor is bad or not working properly

Answer 1

What make, model and year is your vehicle? each make, model and year have different codes. There are many codes (over 50) that can be triggered by faulty O2 sensors.

Answer 2

The code to watch out for a bad oxygen sensor are generally code description from circuit voltage high which can mean itsw harness is disconnected or internally disconnected, another are heater circuit , check fuse for this if good chances are O2 is bad  these will all be generic codes,