Whirpool HSCX 90430 tumble dryer error code F19

I have hard problem with Whirlpool Tumble Dryer HSCX 90430 because this issue occurs sporadically, e.g. appliance stops after few minutes or 40 minutes.

It stops in different times but with the same error : F19

Appliance sometimes finishes to dry but with F19.

I read code references to link among BPM motor and MCU so I checked all wire links but problem is the same.

Can you suggest me what I can check?