Scania AMS DTC 4098 The SCR system is frozen

AMS AMS control unit · Scania · 2 variants

Code 4098 (decimal). Some diagnostic tools show it in hexadecimal as 1002.

In short

The ambient temperature is below -7°C and the SCR system will not start.

Variant 1

Applies to: AMS1

What does Scania AMS fault code 4098 mean?

What causes Scania DTC 4098?

How does the system react?

How to fix Scania AMS fault code 4098?

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Variant 2: Unheated system is unable to start when the ambient temperature is low

Applies to: AMS2

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

Code 4098 in other Scania systems

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