I actually found it inside the lower grill. I can reach through the open hood behind the bumper down to the sensor itself, but it is mounted tip down from inside the bumper housing so the only choice is bumper panel removal! Geeze! Thanks BMW! I had thought a windshield repair person drilling into the lower portion of my windshield where the heated winshield wires are located. But after having the windshield replaced today I still have the same problem, outside temp reading 122* so next is the sensor itself. Just so happened the temp reading error and corresponding CEL (which is stupid if you ask me) happened at the same time as the windshield repair too.

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'01 740i Sport MKIV, Quad Brake Lights, Bi-Xenon retrofit, HID Fogs Dinan 7 Struts, Springs, camber plates, Intake, MAF, CAI, Throttle Body, NBT Retrofit, Strong Strut


'99 318ti Titanium Silver; '97 318ti Boston Green; '13 X5 3.5i Saphire Black Metallic
'84 633csi Black (sold); '88 325iC Black (sold); '97 740iL Black(sold); '01 740iS Black (sold);'97 318ti White (sold); '08 X5 4.8i Titanium Silver (sold); '96 318ti Alaska Blue (sold)