Scania ACC DTC 41220 Communication error between climate system and BMU

ACC Automatic Climate Control · Scania

Code 41220 (decimal). Some diagnostic tools show it in hexadecimal as A104.

In short

The climate system has not received a signal from BMU within a specific time period while the engine is running.

Applies to: ACC3

What does Scania ACC fault code 41220 mean?

What causes Scania DTC 41220?

How does the system react?

How to fix Scania ACC fault code 41220?

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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.