Scania fault code 40989
Code 40989 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:
CCU
LIN communication, fault in atmospheric humidity sensor
The control unit has interpreted that there is a fault in LIN communication with the atmospheric humidity sensor.
Read explanation →
ACC Automatic Climate Control
LIN communication
Fault in LIN communication with the atmospheric humidity sensor T186.
Read explanation →