Applies to: ACC3
What does Scania ACC fault code 40991 mean?
What causes Scania DTC 40991?
How does the system react?
What are the symptoms?
How to fix Scania ACC fault code 40991?
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.