Scania EMS DTC 1256 Oil mist separator control signal, short circuit to earth

EMS Engine Management System · Scania

Code 1256 (decimal). Some diagnostic tools show it in hexadecimal as 0004E8.

In short

The control unit indicates that the control signal for the oil mist separator is short-circuited to earth.

Applies to: EMS10

What does Scania EMS fault code 1256 mean?

The control unit indicates that the control signal for the oil mist separator is short-circuited to earth.

What causes Scania DTC 1256?

- Cable harness or harness-to-component connector has short-circuited to earth. - Oil mist separator has short-circuited to earth.

How to fix Scania EMS fault code 1256?

  1. Check the cable harness and harness-to-component connector for the oil mist separator.
  2. Renew the oil mist separator.

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