Scania ALLISON DTC 2403 PCS Main modulation solenoid, short circuit to battery

ALLISON Allison automatic gearbox · Scania

Code 2403 (decimal). Some diagnostic tools show it in hexadecimal as 0963.

In short

The control unit has detected a short circuit to battery on the return circuit for the main modulation solenoid.

Applies to: A4

What does Scania ALLISON fault code 2403 mean?

What causes Scania DTC 2403?

How does the system react?

How to fix Scania ALLISON fault code 2403?

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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.