Scania AMS DTC 4664 Reductant doser heater, excessive consumption

AMS AMS control unit · Scania

Code 4664 (decimal). Some diagnostic tools show it in hexadecimal as 1238.

In short

The reductant doser heater has consumed more power than permitted.

Applies to: AMS1

What does Scania AMS fault code 4664 mean?

What causes Scania DTC 4664?

How does the system react?

How to fix Scania AMS fault code 4664?

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This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

Code 4664 in other Scania systems