Scania COMMUNICATOR DTC 3147012 The control unit has too low a supply voltage

COMMUNICATOR Communicator (C200 / C300 / C400) · Scania

Code 3147012 (decimal). Some diagnostic tools show it in hexadecimal as 300504.

In short

The supply voltage to the control unit is too low. The fault code is activated when the supply voltage falls below 16 V for more than 60 s.

Applies to: C400

What does Scania COMMUNICATOR fault code 3147012 mean?

The supply voltage to the control unit is too low. The fault code is activated when the supply voltage falls below 16 V for more than 60 s.

What causes Scania DTC 3147012?

- The control unit is incorrectly connected to the 24 V supply voltage.

How does the system react?

- Functions may degrade. - Shutdown or interruption of the electric power supply may occur.

How to fix Scania COMMUNICATOR fault code 3147012?

  1. Check all connections.
  2. Check that the cable harness for the supply voltage is connected as per the electrical diagram.
  3. Check the continuity in the cable harness with a multimeter.
  4. Check the generator.

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.