Scania COMMUNICATOR DTC 774 Communication with the coordinator (COO)

COMMUNICATOR Communicator (C200 / C300 / C400) · Scania

Code 774 (decimal). Some diagnostic tools show it in hexadecimal as 0306.

In short

The RTC control unit has not received any CAN messages from the coordinator within the time expected.

Applies to: C300

What does Scania COMMUNICATOR fault code 774 mean?

What causes Scania DTC 774?

What are the symptoms?

How to fix Scania COMMUNICATOR fault code 774?

Read the full explanation with Premium

Causes, system reaction, symptoms and step-by-step repair instructions for every fault code are available to Premium members.

  • Full explanations of every code and brand
  • Causes, symptoms and repair steps
  • New brands and codes included

Yearly plan: pay 10 months, get 12. Cancel at any time.

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

Code 774 in other Scania systems

Compare code 774 in every system →