Scania EMS DTC 12291 Cam Phaser Intake Actuator, Data Erratic, Intermittent Or Incorrect In ECU

EMS Engine Management System · Scania

Code 12291 (decimal). Some diagnostic tools show it in hexadecimal as 003003.

In short

ECU indicates that some fault detected in driver HW in ECU

Applies to: EMS10

What does Scania EMS fault code 12291 mean?

What causes Scania DTC 12291?

What are the symptoms?

How to fix Scania EMS fault code 12291?

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

Code 12291 in other Scania systems