My 2005 T&I C has 132000 miles. The check engine light is on. I have Codes P2096, P0113 & P0032. I have tested the IAT by removing it and verifying that the resistance goes down when it is heated with a heat gun. I replaced the O2 sensor recently, the light went out and it worked fine for one month. Now it stumbles. I tested the replacement sensor whiich has 4.+ volts powerring the heater circuit. Sensor ground is good. The heater circuit of the O2 sensor has 5.2 ohms of resistance. I tested that the O2 sensor goes from 0.08 volts to 1.1 volts when heated with a propane torch and then goes back to 0.08 volts approximately when the heat is taken away.
Any Ideas would be appreciated.