Scania ALLISON DTC 1809 Oil temperature sensor, unreasonably fast voltage changes

ALLISON Allison automatic gearbox · Scania

Code 1809 (decimal). Some diagnostic tools show it in hexadecimal as 0711.

In short

The control unit has detected unreasonably fast resistance changes in the oil temperature sensor.

Applies to: A4

What does Scania ALLISON fault code 1809 mean?

What causes Scania DTC 1809?

How does the system react?

How to fix Scania ALLISON fault code 1809?

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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.

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