ALLISON 1556 Scania Fault on torque limiter between engine and gearbox

ALLISON Allison automatic gearbox · Scania

Code 1556 (decimal). Some diagnostic tools show it in hexadecimal as 0614.

In short

Engine does not respond to gearbox request for torque reduction.

Applies to: A4

What does Scania ALLISON fault code 1556 mean?

What causes Scania DTC 1556?

How does the system react?

How to fix Scania ALLISON fault code 1556?

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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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