Scania EMS DTC 12458 Cam Phaser Exhaust Actuator, Shorted To Low Source

EMS Engine Management System · Scania

Code 12458 (decimal). Some diagnostic tools show it in hexadecimal as 0030AA.

In short

ECU indicates Shorted To Low Source

Applies to: EMS10

What does Scania EMS fault code 12458 mean?

What causes Scania DTC 12458?

What are the symptoms?

How to fix Scania EMS fault code 12458?

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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.