The cab fan (M3) is overheated.
â–¶ How to fix
Check that the fan is rotating freely and that the air channels are not blocked.
What you'll see
No driver-visible symptom recorded.
System reaction
The cab fan will shut off.
Diagnostic depth
Detection
The digital feedback signal from the cab fan to the climate control system (E17) is indicating that the fan is overheated. The test is performed when the cab fan is running and the starter motor (M1) is not running.
Possible cause
The cab fan (M3) or the air channels can be blocked.