Yes i tried that - had same outcome: warning after 10 seconds of engine running.
I used a multimeter on the sensor today and have consistently been showing between 5 and 7 volts.
Problem is:
a) I have no idea whether I'm using the multimeter correctly
b) I have no idea whether this current is what it should be on the circuit
So basically I have data and no clue what it means
Any help greatly appreciated