Scania COO DTC 12544 High coolant temperature warning lamp

COO Coordinator · Scania · 2 variants

Code 12544 (decimal). Some diagnostic tools show it in hexadecimal as 3100.

In short

Conflicting signals in the high coolant temperature warning lamp circuit.

Variant 1

Applies to: COO4 IM

What does Scania COO fault code 12544 mean?

What causes Scania DTC 12544?

How does the system react?

How to fix Scania COO fault code 12544?

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Variant 2

Applies to: COO4 IM (Slave)

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

Code 12544 in other Scania systems

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