p0155

I have a 2003 Wrangler Sport 4.0 5 speed For the past year or more I have been chasing code P0135 and P0155 - 02 Sensor Heater Circuit Malfunction (Bank I Sensor 1, Bank 2 Sensor 1) Replaced O2 sensors multiple times, checked wiring everything spot on. The fix Wrong Thermostat. I replaced...