Hi Rick, welcome to Just Answer!.
I don't think you'll find one. They didn't often exist, despite being represented in oddball diagnostic trouble codes. The rare instances when you actually have one puts it in the back side of the throttle body. Look for a 2-wire sensor on the firewall side, probably toward the (vehicle) right; nothing else should be in the area.
If you're having any other problems other than locating the sensor, feel free to write back. I'd be happy to talk.