Scania ALLISON DTC 2448 Retarder pressure sensor, voltage high

ALLISON Allison automatic gearbox · Scania

Code 2448 (decimal). Some diagnostic tools show it in hexadecimal as 0990.

In short

The control unit has detected 5 V or more from the retarder pressure sensor.

Applies to: A4

What does Scania ALLISON fault code 2448 mean?

What causes Scania DTC 2448?

How does the system react?

How to fix Scania ALLISON fault code 2448?

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