Scania ALLISON DTC 49429 Lost communication with the engine management system (J1939)

ALLISON Allison automatic gearbox · Scania

Code 49429 (decimal). Some diagnostic tools show it in hexadecimal as C115.

In short

The control unit has not received information on engine torque or accelerator position from the engine control unit for a specific period of time.

Applies to: A4

What does Scania ALLISON fault code 49429 mean?

What causes Scania DTC 49429?

How does the system react?

How to fix Scania ALLISON fault code 49429?

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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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