Sorry, I couldn’t ID a fuse number. Also, having never owned a P80 car, I don’t have a good wiring diagram either to try and trace how the sensor is powered. I’m thinking you should be able to attach a volt meter to the heater wires and see if it’s receiving power at start-up. As I recall my 2003 sends power to the sensor heater the moment you turn the ignition on - the engine doesn’t need to be running. Therefore when the sensor heater went bad I could get it to throw a fault code by simply turning the ignition on.
Are you 100% sure that Bosch is OE and not Denso? What does a dealer parts guy say?
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