Scania TMS DTC 2603 Planetary gear's coupling sleeve

TMS Transmission Management System · Scania · 2 variants

Code 2603 (decimal). Some diagnostic tools show it in hexadecimal as 0A2B.

In short

Despite repeated gear-changing attempts, the sensor for the planetary gear coupling sleeve does not verify that it has reached low range.

Variant 1

Applies to: TMS3 (TMS)

What does Scania TMS fault code 2603 mean?

What causes Scania DTC 2603?

How does the system react?

What are the symptoms?

How to fix Scania TMS fault code 2603?

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Variant 2: Range gear coupling sleeve, failed verification

Applies to: TMS5 (TMS)

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

Code 2603 in other Scania systems

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