Scania EMS DTC 4820 CAN timeout from the APS

EMS Engine Management System · Scania · 3 variants

Code 4820 (decimal). Some diagnostic tools show it in hexadecimal as 12D4.

In short

The engine control unit has no CAN communication with APS.

Variant 1

Applies to: EMS S8EMS S8 (S8PDE)

What does Scania EMS fault code 4820 mean?

What causes Scania DTC 4820?

How to fix Scania EMS fault code 4820?

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Variant 2: Aftertreatment 1 Diesel Particulate Filter Differential Pressure, offset value is above threshold.

Applies to: EMS10

Variant 3: Fuel supply to cylinders

Applies to: EMS S6

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

Code 4820 in other Scania systems

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