Scania TMS DTC 2823 The freewheeling retarder cannot be engaged

TMS Transmission Management System · Scania · 2 variants

Code 2823 (decimal). Some diagnostic tools show it in hexadecimal as 0B07.

In short

The control arm does not reach all the way to the activated position before returning to the deactivated position.

Variant 1

Applies to: TMS3 (TMS)

What does Scania TMS fault code 2823 mean?

What causes Scania DTC 2823?

How does the system react?

How to fix Scania TMS fault code 2823?

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Variant 2: Not valid for TMS4 - Disengaged retarder moves towards engaged position from disengaged but stops in the middle of the two positions and goes back to disengaged.

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.