Scania EMS DTC 10 Cam phaser for intake valve, slow response

EMS Engine Management System · Scania

Code 10 (decimal). Some diagnostic tools show it in hexadecimal as 00000A.

In short

The intake valve cam phaser response is slower than expected when changing position.

Applies to: EMS10

What does Scania EMS fault code 10 mean?

The intake valve cam phaser response is slower than expected when changing position.

What causes Scania DTC 10?

- Fault in the actuator. - Contaminated oil. - Oil pressure or supply to the cam phaser too low. - Debris in the cam phaser or control valve. - The control valve does not work - The torsion spring has come loose from the mounting point. - Fault with the cam phaser.

What are the symptoms?

- The engine performance is affected. - Decompression braking performance may be affected. - May cause engine noise.

How to fix Scania EMS fault code 10?

  1. Check if there are other fault codes relating to the actuator.
  2. Check that the engine has sufficient oil pressure and that the oil is not contaminated.
  3. Visually check that the electric actuator is moving correctly.
  4. Visually check that the cam phaser control valve moves smoothly and does not jam in any position.
  5. See WSM > 01 Engine > 01-01 Cylinder Head > Cylinder Head [DOHC].
  6. Visually check that the torsion spring on the cam phaser is in the correct position.
  7. See WSM > 01 Engine > 01-01 Cylinder Head > Cylinder Head [DOHC].
  8. After repair, verify by running a cam phaser operational test.
  9. Renew the cam phaser and control valve if the fault persists.

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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