Well before my turbo decided to bite the dust I was throwing codes for a front 02 no activity, low volts, etc. so when I bought a new turbo it came with a 02 sensor so I installed it with that one same thing. I put it on the scanner and it displays 0 volts, I graphed it on the scope just a flat 0 line nothing. Both sensors didn't look damaged, the wires look fine no tears, burns, pulled out wires nothing. I checked both connectors no corrosion, loose pins, nothing but sensors rear 0 volts.

What should I check anything common with this I would have to buy such an expensive sensor again and have it not be truely the problem any advice of what I should look into would be greatly appreciated!

 

anybody?

 

Going to bump this again anybody swapped another sensor same thing. Is there any diagrams or testing I can do to the wiring on my car? Multi meter? etc. Is there a common place maybe on the car wiring part that breaks or messes up? Would like to get this figured out!

 

check for resistance in the circuit between the sensor and ecu.

 

Is there a certain number I should see?

 

Having the same problem mine reads ckt no activity bank 1. Do you have a speed density setup?

 

I was wondering the same thing...... I just changed my block for a 2.3L stroker block..... Nothing was wrong with my car, just wanted to upgrade..... And now thats the code I'm getting.......Wonder why?

 

I still have stock MAF.