Re: O2 Sensor Bank 1 Sensor 2
Welcome to the garage.
For sure there is a fuse for the O2 heaters. Not familiar with the liberty, but some jeeps even have a relay in the heater circuit. Have a look in the power distribution center (relay/fuse box under the hood), you will see on the inside of the cover which relay and which fuse is for what. Did you use original sensor ( also not sure for the liberty, but on the WJ its Denso), because other brands may give problems with slow heating and the PCM sees this as a heater fault.