Scania EEC DTC 8378 Reductant circuit

EEC Exhaust Emission Control · Scania

Code 8378 (decimal). Some diagnostic tools show it in hexadecimal as 20BA.

In short

Fault in the control of the heater of the reductant doser.

Applies to: EEC3

What does Scania EEC fault code 8378 mean?

What causes Scania DTC 8378?

How does the system react?

How to fix Scania EEC fault code 8378?

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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 8378 in other Scania systems