ok, i saw your link, yes this answers my question, i'm at 100,000 i should just start changing them, my local toyota dealer may be able to help me, the lexus dealer is much further. Thanks for you help
i know on my honda there was 4 wires on the sensor, evidently 2 for heater & 2 to operate the sensor signal,can you give me more detailes on checking this?I had herd the 9volts the meter uses the rung out the ohms circut could damage the sensor.
i did delete the code with my el-cheapo scan tool.it came right back. would this be to disconect battery pole to delete? where would this heater be?aren't they built into the sensor?