Scania COO DTC 684 Drive mode selector for Comfort Shift

COO Coordinator · Scania · 3 variants

Code 684 (decimal). Some diagnostic tools show it in hexadecimal as 02AC.

In short

Incorrect signal or combination of signals from one or more of the drive mode selector micro switches.

Variant 1

Applies to: COO8 (COO)COO9 (COO)

What does Scania COO fault code 684 mean?

What causes Scania DTC 684?

What are the symptoms?

How to fix Scania COO fault code 684?

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Variant 2: Gear selector for Comfort Shift

Applies to: COO7

Variant 3

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 684 in other Scania systems

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