Scania EMS DTC 4220 Charge air pressure sensor T122

EMS Engine Management System · Scania · 3 variants

Code 4220 (decimal). Some diagnostic tools show it in hexadecimal as 107C.

In short

The engine control unit indicates too high a voltage in the circuit for the charge air pressure sensor.

Variant 1: Charge air pressure sensor T166, short circuit to high voltage

Applies to: EMS10

What does Scania EMS fault code 4220 mean?

What causes Scania DTC 4220?

How to fix Scania EMS fault code 4220?

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Variant 2

Applies to: EMS S8

Variant 3: Combined sensor T47

Applies to: EMS S8 (S8PDE)

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

Code 4220 in other Scania systems

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