Scania EEC DTC 8371 Reductant circuit

EEC Exhaust Emission Control · Scania

Code 8371 (decimal). Some diagnostic tools show it in hexadecimal as 20B3.

In short

Fault in the coolant valve to the reductant heater.

Applies to: EEC3

What does Scania EEC fault code 8371 mean?

What causes Scania DTC 8371?

How does the system react?

How to fix Scania EEC fault code 8371?

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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 8371 in other Scania systems