Scania EMS DTC 50178 Unit injector for cylinder 5

EMS Engine Management System · Scania · 2 variants

Code 50178 (decimal). Some diagnostic tools show it in hexadecimal as C402.

In short

It has taken longer than expected for the control unit to build up the current in the solenoid valve.

Variant 1

Applies to: EMS S6 IoM singlespeed (S6IM)EMS S6 (EMS S6 EuroIII)

What does Scania EMS fault code 50178 mean?

What causes Scania DTC 50178?

How does the system react?

How to fix Scania EMS fault code 50178?

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Variant 2

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.