Scania EMS DTC 401 Fuel pressure sensor T111

EMS Engine Management System · Scania · 2 variants

Code 401 (decimal). Some diagnostic tools show it in hexadecimal as 0191.

In short

Fuel pressure sensor fault.

Variant 1

Applies to: EMS S7EMS S8

What does Scania EMS fault code 401 mean?

What causes Scania DTC 401?

How does the system react?

How to fix Scania EMS fault code 401?

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Variant 2: Fuel pressure and temperature sensor in the accumulator, internal fault

Applies to: EMS10

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

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