Scania AMS DTC 6406 Exhaust gas temperature sensor T158, high internal temperature

AMS AMS control unit · Scania

Code 6406 (decimal). Some diagnostic tools show it in hexadecimal as 001906.

In short

Temperature sensor indicates too high internal temperature.

Applies to: AMS2

What does Scania AMS fault code 6406 mean?

How to fix Scania AMS fault code 6406?

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.