Scania EMS DTC 4493 Major leak downstream of the compressor or fault in the mass flow sensor

EMS Engine Management System · Scania

Code 4493 (decimal). Some diagnostic tools show it in hexadecimal as 00118D.

In short

The engine control unit calculates that less air is coming into the engine than what is measured by the mass flow sensor.

Applies to: EMS10

What does Scania EMS fault code 4493 mean?

What causes Scania DTC 4493?

How to fix Scania EMS fault code 4493?

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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.