Scania SC DTC 313 Internal communication

SC SC control unit · Scania · 6 variants

Code 313 (decimal). Some diagnostic tools show it in hexadecimal as 0139.

In short

Faulty communication between internal components in the tachograph. The fault is detected during the diagnostic self-test that the tachograph performs on start-up.

Variant 1

Applies to: SC1 (TCO)

What does Scania SC fault code 313 mean?

Faulty communication between internal components in the tachograph. The fault is detected during the diagnostic self-test that the tachograph performs on start-up.

What causes Scania DTC 313?

Internal fault in the tachograph.

How to fix Scania SC fault code 313?

  1. Try turning the voltage on and off.
  2. If this does not help and the fault code remains active, the tachograph must be renewed.

Variant 2: Tachograph

Applies to: SC2 (TCO)

Detection

Incorrect or unreliable data. The codes 1, 2, 3 and 4 are shown in the tachograph display for this fault code.

Possible cause

Internal fault in the tachograph.

System reaction

The codes 1, 2, 3 and 4 are shown in the tachograph display for this fault code.

How to fix

  1. Clear the fault code.
  2. Cut off the power to the tachograph.
  3. Restore power to the tachograph.
  4. If the fault code recurs, renew the tachograph.

Variant 3: Internal fault

Applies to: SC3 (TCO)

Detection

Faulty communication between internal components in the tachograph. The fault is detected during the diagnostic self-test that the tachograph performs on start-up.

Possible cause

Internal fault in the tachograph.

How to fix

  1. Try turning the voltage on and off.
  2. If this does not help and the fault code remains active, the tachograph must be renewed.

Variant 4: Tachograph

Applies to: SC4 (TCO)

Detection

Incorrect or unreliable data, the system has detected an incorrect shutdown.

Possible cause

- Internal fault in the tachograph. - The system has restarted due to a loss of power.

System reaction

The event is stored in the tachograph and in the digital tachograph card. A fault message is displayed.

How to fix

  1. Check the voltage supply to the tachograph.
  2. Clear the fault code.
  3. Cut off the power to the tachograph.
  4. Restore power to the tachograph.
  5. If the fault code recurs, renew the tachograph.

Variant 5: Internal fault

Applies to: SC5 (TCO)

Detection

Faulty communication between internal components in the tachograph. The fault is detected during the diagnostic self-test that the tachograph performs on start-up.

Possible cause

Internal fault in the tachograph.

How to fix

Renew the tachograph.

Variant 6: Tachograph

Applies to: SC6 (TCO)

Detection

Incorrect or unreliable data, the system has detected an incorrect shutdown.

Possible cause

- Internal fault in the tachograph. - The system has restarted due to a loss of power.

System reaction

The event is stored in the tachograph and in the digital tachograph card. An error message is displayed.

How to fix

  1. Check the voltage supply to the tachograph.
  2. Clear the fault code.
  3. Cut the power to the tachograph.
  4. Restore power to the tachograph.
  5. If the fault code recurs, 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.

Code 313 in other Scania systems

Compare code 313 in every system →