Scania ALLISON DTC 10020 Solenoid PCS1 jammed in the ON position

ALLISON Allison automatic gearbox · Scania

Code 10020 (decimal). Some diagnostic tools show it in hexadecimal as 2724.

In short

PCS4 still supplies clutch C1 even though it should be shut off.

Applies to: A4

What does Scania ALLISON fault code 10020 mean?

What causes Scania DTC 10020?

How does the system react?

How to fix Scania ALLISON fault code 10020?

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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.