Applies to: CUV1
What does Scania CUV fault code 40 mean?
There is no CAN message from the tachograph.
What causes Scania DTC 40?
Connection fault with CAN, tachograph, coordinator or open circuit in the wiring. If the vehicle does not have a tachograph, the cause can be contact problems with the coordinator.
How does the system react?
Functions in the control unit which are dependent on this signal will not work. For example the following faults will occur: - Automatic switching off of worklamps above 20 km/h does not function. - The lighting check via remote control does not work. - The daytime running lights will be on even if the engine is switched off.
How to fix Scania CUV fault code 40?
- Check that the tachograph is correctly connected.
- If there is no tachograph, check the coordinator.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.