Scania ACC DTC 40989 LIN communication

ACC Automatic Climate Control · Scania

Code 40989 (decimal). Some diagnostic tools show it in hexadecimal as A01D.

In short

Fault in LIN communication with the atmospheric humidity sensor T186.

Applies to: ACC3

What does Scania ACC fault code 40989 mean?

What causes Scania DTC 40989?

What are the symptoms?

How to fix Scania ACC fault code 40989?

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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.

Code 40989 in other Scania systems