Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › O-2 Heater Monitor Won't Set. › Reply To: O-2 Heater Monitor Won't Set.
October 22, 2020 at 5:30 pm
#986801
On my 05 accord, the heater monitor sets even while idling. I don’t have to drive anywhere. It should be among the first things to set.
Most such O2 heater issues are usually due to electrical problems. Either faulty wiring or faulty heater in the sensor.
You will need a multimeter and your Hyundai wiring diagram to check it.