Scania MGU DTC 6656 CAN communication, incorrect data

MGU MGU control unit · Scania

Code 6656 (decimal). Some diagnostic tools show it in hexadecimal as 1A00.

In short

Incorrect or unreliable data in the received CAN message.

Applies to: MGU2MGU2 (MGU2X)MGU2 (MGUC2)MGU2 (MGUC2X)

What does Scania MGU fault code 6656 mean?

What causes Scania DTC 6656?

How does the system react?

What are the symptoms?

How to fix Scania MGU fault code 6656?

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
Get Premium – 7,50 € / month I already have an account

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 6656 in other Scania systems

Compare code 6656 in every system →