Technical climate system

[edesl]

Dear All,
I have 150hp T-Jet Bravo.
The diagnosis shows
B1901 Windscreen motor feedback - Signal low
What are the most common reasons causing this symptom?
The error is permanently on.
The white colored coupler is intact at the motor.
Thanks,

 

[aurick86]

signal low, could be a short to ground... even internally in the motor.