Variant 1
Applies to: SC1 (TCO)SC3 (TCO)
What does Scania SC fault code 4704 mean?
The tachograph has registered that the vehicle has been in motion without a valid digital tachograph card.
What causes Scania DTC 4704?
The digital tachograph card is invalid or missing.
How to fix Scania SC fault code 4704?
Make sure that there is a valid digital tachograph card in the tachograph.
Variant 2
Applies to: SC2 (TCO)
Detection
The tachograph has registered that the vehicle has been in motion without a valid digital tachograph card. The tachograph display shows code 28 for this fault code.
Possible cause
- The digital tachograph card in card holder 1 is invalid or missing. - An invalid combination of digital tachograph cards in card holder 1 and card holder 2.
How to fix
- Make sure that there is a valid digital tachograph card in the card holder 1.
- Make sure there is not a control card or company card in one of the card holders.
Variant 3
Applies to: SC4 (TCO)
Detection
The tachograph has registered that the vehicle has been in motion without a valid digital tachograph card. The tachograph display shows code 28 for this fault code.
Possible cause
- The digital tachograph card in card holder 1 is invalid or missing. - An invalid combination of digital tachograph cards in card holder 1 and card holder 2.
System reaction
The event is stored in the tachograph. Display fault code 28 is displayed.
How to fix
- Make sure that there is a valid digital tachograph card in card holder 1.
- Make sure there is no control card or company card in any of the card holders.
Variant 4
Applies to: SC5 (TCO)
Detection
The tachograph has registered that the vehicle has moved without a valid digital tachograph card.
Possible cause
The digital tachograph card is invalid or missing.
How to fix
- Stop the vehicle.
- Insert a valid digital tachograph card into the tachograph.
Variant 5
Applies to: SC6 (TCO)
Detection
- The tachograph has registered that the vehicle has moved without a valid digital tachograph card. - The tachograph display shows fault code 28.
Possible cause
- The digital tachograph card in card holder 1 is invalid or missing. - An invalid combination of digital tachograph cards in card holder 1 and card holder 2.
System reaction
- The event is stored in the tachograph. - Fault code 28 is displayed on the display.
How to fix
- Make sure that there is a valid digital tachograph card in card holder 1.
- Make sure there is no control card or company card in any of the card holders.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.