Scania EMS DTC 5703 Alternator P3

EMS Engine Management System · Scania · 2 variants

Code 5703 (decimal). Some diagnostic tools show it in hexadecimal as 1647.

In short

The motor control unit indicates that the actuator has a short circuit to earth or to voltage supply.

Variant 1: Starter actuator, short circuit

Applies to: EMS10

What does Scania EMS fault code 5703 mean?

What causes Scania DTC 5703?

How to fix Scania EMS fault code 5703?

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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.