Scania EMS DTC 9 Cold start intake cam phaser target error

EMS Engine Management System · Scania

Code 9 (decimal). Some diagnostic tools show it in hexadecimal as 000009.

In short

Intake phaser not able to hold reference position

Applies to: EMS10

What does Scania EMS fault code 9 mean?

Intake phaser not able to hold reference position

What causes Scania DTC 9?

Wrong viscosity oil used. Oil pressure/supply to cam phaser is too low. Bias spring loose from mounting point. Debris in the cam phaser or control valve. Actuator malfunction. Cam torque to high. Cam phaser malfunction. Control valve malfunction. Sump oil temperature sensor malfunction.

What are the symptoms?

Engine performance will be impacted. Can cause engine noise.

How to fix Scania EMS fault code 9?

  1. Visually check that the cam phaser bias spring is mounted correctly.
  2. Check that cam phaser system has sufficient oil pressure and flow.
  3. Rotate the engine, check that the resistance isn’t abnormally high.
  4. Check that the sump oil temperature sensor is working as intended.
  5. Check actuator fault codes, check that the actuator moves without problem.
  6. If there is any fault with the actuator replace it.
  7. Check that the control valve spool moves smoothly and don’t stick in any position.
  8. Change oil, remove fault codes, test drive.
  9. If problem persists change cam phaser and control valve.

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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