Scania EMS DTC 1238 Exhaust brake actuator is stuck

EMS Engine Management System · Scania

Code 1238 (decimal). Some diagnostic tools show it in hexadecimal as 0004D6.

In short

The exhaust brake actuator control pressure is fixed and shows no pressure change compared to the exhaust brake actuator's control current.

Applies to: EMS10

What does Scania EMS fault code 1238 mean?

What causes Scania DTC 1238?

What are the symptoms?

How to fix Scania EMS fault code 1238?

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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.