Scania AMS DTC 8370 Coolant valve to the reductant heater, electrical fault

AMS AMS control unit · Scania · 2 variants

Code 8370 (decimal). Some diagnostic tools show it in hexadecimal as 20B2.

In short

The control unit indicates an electrical fault in the coolant valve for the reductant heater.

Variant 1

Applies to: AMS1

What does Scania AMS fault code 8370 mean?

What causes Scania DTC 8370?

How does the system react?

How to fix Scania AMS fault code 8370?

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Variant 2

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 8370 in other Scania systems

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