New O2 sensor new codes

[No Pvmt]

I replaced my front O2 sensors (P0174 and other side code). Now I am getting P0155 and P0135 and the old codes. They are not Bosch I got them from Gold Coast Rovers. I called GCR and asked them about the sensors and asked if they have had problems with them and he just said that they will take them back if a professional shop says that they are bad, not me. My question is the O2 sensor likely good and my truck has more issues or how do you check if the O2 are bad? Thanks

 

[brianhoberg]

swap the O2's and see if you get the same error on the other side. I've heard you can also use a multimeter to test them as well, but no clue how to do that.

 

[No Pvmt]

Thanks for the reply, unfortunately it was done at a shop and they tossed the old O2s.

 

[mbrummal]

swap them side to side, not new and old. You want to see if the fault code moves with the sensor or stays where it is. If it moves with the sensor, you have a bad sensor and need to get them (it) replaced.

 

[No Pvmt]

I never would of thought of that, thanks!atriot: