Most likely the sensor heater has failed. Check the resistance of the heater in the sensor. It will most likely be open (no resistance) indicating the sensor heater has failed. I recommend getting the OEM type with the correct plug from oxygensensors.com.
Thanks for that info, even though it is 2009 September, you input still in demand.
02 Gs300 Heater Circuit For Oxygen Sensor Question
in 93 - 05 Lexus GS300 / GS400 / GS430
Posted
Thanks for that info, even though it is 2009 September, you input still in demand.