The O2 sensor heater is an integral part of the sensor - so you must have had the complete O2 sensor replaced. I am wondering if this was the result of a code read or a code read and some further investigation?
There is a variety of fault codes indicating a possible fault with the O2 heater circuit but such descriptions as heater circuit high, low, open or shorted can equally apply to the wiring, connections or even the computer.
I wonder have you erased the fault code and road tested?
Answers & Comments
The O2 sensor heater is an integral part of the sensor - so you must have had the complete O2 sensor replaced. I am wondering if this was the result of a code read or a code read and some further investigation?
There is a variety of fault codes indicating a possible fault with the O2 heater circuit but such descriptions as heater circuit high, low, open or shorted can equally apply to the wiring, connections or even the computer.
I wonder have you erased the fault code and road tested?