Scania COO DTC 643 Parking brake

COO Coordinator · Scania · 6 variants

Code 643 (decimal). Some diagnostic tools show it in hexadecimal as 0283.

In short

The signal from one of the pressure switches for the parking brake circuit is implausible in relation to the vehicle speed.

Variant 1

Applies to: COO10 (COO)

What does Scania COO fault code 643 mean?

What causes Scania DTC 643?

How does the system react?

What are the symptoms?

How to fix Scania COO fault code 643?

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Variant 2: Parking brake, implausible signal

Applies to: COO11 (COO)

Variant 3

Applies to: COO8 (COO)

Variant 4

Applies to: COO9 (COO)

Variant 5

Applies to: COO7

Variant 6

Applies to: COO8

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

Code 643 in other Scania systems

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