Scania EMS DTC 138947 Exhaust gas aftertreatment – reductant heater H501

EMS Engine Management System · Scania

Code 138947 (decimal). Some diagnostic tools show it in hexadecimal as 021EC3.

In short

The heater is short-circuited to battery.

Applies to: EMS LCS1

What does Scania EMS fault code 138947 mean?

What causes Scania DTC 138947?

How does the system react?

How to fix Scania EMS fault code 138947?

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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.