Scania APS DTC 663 Pressure control

APS Air Processing System · Scania

Code 663 (decimal). Some diagnostic tools show it in hexadecimal as 0297.

In short

Air pressure in parking brake circuit has been above the permitted level.

Applies to: APS1

What does Scania APS fault code 663 mean?

What causes Scania DTC 663?

How does the system react?

How to fix Scania APS fault code 663?

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 663 in other Scania systems

Compare code 663 in every system →