EMS 4784 Scania Gas temperature sensor

EMS Engine Management System · Scania · 2 variants

Code 4784 (decimal). Some diagnostic tools show it in hexadecimal as 12B0.

In short

The temperature sensor produces too high a voltage value.

Variant 1

Applies to: EMS S7EMS S8

What does Scania EMS fault code 4784 mean?

What causes Scania DTC 4784?

How does the system react?

How to fix Scania EMS fault code 4784?

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Variant 2: Fuel supply to cylinders

Applies to: EMS S6

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