Scania AMS DTC 5665 Reductant pick-up unit T116/T4002

AMS AMS control unit · Scania

Code 5665 (decimal). Some diagnostic tools show it in hexadecimal as 1621.

In short

CAN communication to the reductant pick-up unit is interrupted.

Applies to: AMS1

What does Scania AMS fault code 5665 mean?

What causes Scania DTC 5665?

How does the system react?

How to fix Scania AMS fault code 5665?

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 5665 in other Scania systems

Compare code 5665 in every system →