Thanks for your help David,
The probe is working again, must have been a bad connection afterall.
First of all i wanna thank u all for letting me be part of this great community,
i upgraded my ender3 with a Duet2Wifi and a DC42ir sensor,
i use the sensor as Z endstop and bed leveling
it has been working great for over a week now,
but today the sensor stopped flashing 4 times at turn on, no flashes at all.
Is my sensor dead or is it something i missed ?
Thanks for your help