Scania CUV DTC 633 Internal control unit, right-hand headlamp

CUV Visibility system · Scania

Code 633 (decimal). Some diagnostic tools show it in hexadecimal as 0279.

In short

Fault in the temperature sensor in the internal control unit in the right-hand headlamp.

Applies to: CUV3 (VIS)

What does Scania CUV fault code 633 mean?

What causes Scania DTC 633?

How to fix Scania CUV fault code 633?

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 633 in other Scania systems

Compare code 633 in every system →