Scania EMD DTC 4131 Reductant quality too low

EMD EMD control unit · Scania · 2 variants

Code 4131 (decimal). Some diagnostic tools show it in hexadecimal as 1023.

In short

The concentration of reductant is too low and the level of nitrogen oxides downstream of the catalytic converter is too high.

Variant 1

Applies to: EMD0

What does Scania EMD fault code 4131 mean?

What causes Scania DTC 4131?

How does the system react?

How to fix Scania EMD fault code 4131?

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Variant 2

Applies to: EMD1

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

Code 4131 in other Scania systems

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