Scania TCC DTC 520 TCC control unit, external CAN bus missing

TCC TCC control unit · Scania

Code 520 (decimal). Some diagnostic tools show it in hexadecimal as 0208.

In short

The TCC control unit has not received CAN notification on an external CAN bus for a certain amount of time.

Applies to: TCC3 (TCC)

What does Scania TCC fault code 520 mean?

What causes Scania DTC 520?

How does the system react?

How to fix Scania TCC fault code 520?

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 520 in other Scania systems

Compare code 520 in every system →