Scania TMS DTC 2578 Coupling sleeve for second and crawl gear gears

TMS Transmission Management System · Scania · 2 variants

Code 2578 (decimal). Some diagnostic tools show it in hexadecimal as 0A12.

In short

The position sensor indicates that the coupling sleeve has not moved from crawl gear position to its neutral position even though the solenoid valve for second gear position has been activated.

Variant 1

Applies to: TMS3 (TMS)

What does Scania TMS fault code 2578 mean?

What causes Scania DTC 2578?

How does the system react?

What are the symptoms?

How to fix Scania TMS fault code 2578?

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Variant 2: Position of coupling sleeve L3, outside approved interval

Applies to: TMS4 (TMS)

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

Code 2578 in other Scania systems