Scania BCI DTC 520 Communication fault, CAN bus for expansion units

BCI BCI control unit · Scania · 7 variants

Code 520 (decimal). Some diagnostic tools show it in hexadecimal as 0208.

In short

Open circuit in cable harness to the CAN bus for expansion units.

Variant 1

Applies to: BCI E1 (BWEXA)BCI E1 (BWEXB)BCI E1 (BWEXC)BCI E1 (BWEXE)BCI E1 (BWEXF)BCI E1 (BWEXG)BCI E1 (BWEXH)BCI E1 (BWEXI)

What does Scania BCI fault code 520 mean?

What causes Scania DTC 520?

How does the system react?

How to fix Scania BCI fault code 520?

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Variant 2: Communication fault, yellow CAN bus

Applies to: BCI1 (BWE)BCI2 (BWE)

Variant 3: Communication fault, yellow CAN bus

Applies to: BCI2 (BWE)

Variant 4: Communication fault, CAN bus 13

Applies to: BCI3 (BWE)

Variant 5

Applies to: BCI B1 (BWEXBUS)

Variant 6

Applies to: BCI C1 (BWEXI)

Variant 7

Applies to: BCI E1 (BWEXD)

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

Code 520 in other Scania systems

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