Scania AMS DTC 4358 Reductant circuit

AMS AMS control unit · Scania · 2 variants

Code 4358 (decimal). Some diagnostic tools show it in hexadecimal as 1106.

In short

The reductant pressure is reduced too quickly when the reductant doser is opened.

Variant 1

Applies to: AMS1

What does Scania AMS fault code 4358 mean?

What causes Scania DTC 4358?

How to fix Scania AMS fault code 4358?

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Variant 2: The reductant doser V117, blocked prefilter

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.

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