Scania COO DTC 55 Dual-circuit steering

COO Coordinator · Scania

Code 55 (decimal). Some diagnostic tools show it in hexadecimal as 0037.

In short

The signal from the dual-circuit steering circuit 1 has been implausible in relation to the engine speed.

Applies to: COO6 (COO6C)

What does Scania COO fault code 55 mean?

What causes Scania DTC 55?

How does the system react?

How to fix Scania COO fault code 55?

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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.

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