Scania ALLISON DTC 12648448 Lost communication with the engine management system (J1587)

ALLISON Allison automatic gearbox · Scania · 2 variants

Code 12648448 (decimal). Some diagnostic tools show it in hexadecimal as C10000.

In short

The control unit has not received information about engine torque or the accelerator pedal position from the engine control unit for more than 2 s.

Variant 1

Applies to: A5

What does Scania ALLISON fault code 12648448 mean?

What causes Scania DTC 12648448?

How does the system react?

How to fix Scania ALLISON fault code 12648448?

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Variant 2

Applies to: A6

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.