Variant 1
Applies to: BVDR1 (TCO)
What does Scania BVDR fault code 40972 mean?
The tachograph has detected an internal fault during a diagnostic self-test.
What causes Scania DTC 40972?
Internal fault in the tachograph.
How does the system react?
The tachograph display shows a warning and the code 01 for this fault code.
How to fix Scania BVDR fault code 40972?
Renew the tachograph.
Variant 2
Applies to: BVDR2 (TCO)
Detection
The tachograph has detected an internal fault during a diagnostic self-test.
Possible cause
Internal fault in the tachograph.
System reaction
The tachograph display shows a warning and code 01 for this fault code.
How to fix
Renew the tachograph.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.