Scania BCI DTC 556 Communication with the gearbox management system (GMS)

BCI BCI control unit · Scania · 14 variants

Code 556 (decimal). Some diagnostic tools show it in hexadecimal as 022C.

In short

Communication with the GMS control unit has ceased.

Variant 1

Applies to: BCI1 (BWE)BCI2 (BWE)

What does Scania BCI fault code 556 mean?

What causes Scania DTC 556?

How does the system react?

How to fix Scania BCI fault code 556?

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Variant 2

Applies to: BCI2 (BWE)

Variant 3

Applies to: BCI3 (BWE)

Variant 4: Overload, C628-19

Applies to: BCI B1 (BWEXBUS)

Variant 5: Overload, ExpI-B1

Applies to: BCI C1 (BWEXI)

Variant 6: Overload, ExpA-21

Applies to: BCI E1 (BWEXA)

Variant 7: Overload, ExpB-21

Applies to: BCI E1 (BWEXB)

Variant 8: Overload, ExpC-21

Applies to: BCI E1 (BWEXC)

Variant 9: Overload, ExpD-21

Applies to: BCI E1 (BWEXD)

Variant 10: Overload, ExpE-21

Applies to: BCI E1 (BWEXE)

Variant 11: Overload, ExpF-21

Applies to: BCI E1 (BWEXF)

Variant 12: Overload, ExpG-21

Applies to: BCI E1 (BWEXG)

Variant 13: Overload, ExpH-21

Applies to: BCI E1 (BWEXH)

Variant 14: Overload, ExpI-21

Applies to: BCI E1 (BWEXI)

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