Scania AMS DTC 8377 V117, Reductant doser heater shorted to battery or open circuit

AMS AMS control unit · Scania

Code 8377 (decimal). Some diagnostic tools show it in hexadecimal as 20B9.

In short

The control unit indicates that the control of the reductant doser heater is shorted to battery or open circuit.

Applies to: AMS1

What does Scania AMS fault code 8377 mean?

What causes Scania DTC 8377?

How does the system react?

How to fix Scania AMS fault code 8377?

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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 8377 in other Scania systems