Applies to: MCC3
What does Scania MCC fault code 40978 mean?
The control unit has interpreted that the fan motor is overheated.
What causes Scania DTC 40978?
The fan motor or the air ducts are blocked.
How does the system react?
The fan motor is switched off.
How to fix Scania MCC fault code 40978?
- Check that the fan motor can rotate freely.
- Check that the air ducts are not blocked.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.