Scania COO DTC 678 Verification of starter key

COO Coordinator · Scania · 4 variants

Code 678 (decimal). Some diagnostic tools show it in hexadecimal as 02A6.

In short

The starter key could not be verified.

Variant 1

Applies to: COO8 (COO)COO9 (COO)

What does Scania COO fault code 678 mean?

What causes Scania DTC 678?

How to fix Scania COO fault code 678?

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Variant 2

Applies to: COO7COO8

Variant 3

Applies to: COO10 (COO)

Variant 4

Applies to: COO11 (COO)

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

Code 678 in other Scania systems

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