Scania BCI DTC 638 Information fault, trailer weight

BCI BCI control unit · Scania · 3 variants

Code 638 (decimal). Some diagnostic tools show it in hexadecimal as 027E.

In short

Faulty information regarding trailer weight.

Variant 1

Applies to: BCI1 (BWE)BCI2 (BWE)

What does Scania BCI fault code 638 mean?

What causes Scania DTC 638?

How does the system react?

How to fix Scania BCI fault code 638?

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Variant 2: Trailer weight, CAN communication fault

Applies to: BCI2 (BWE)

Variant 3: Trailer weight, CAN communication fault

Applies to: BCI3 (BWE)

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

Code 638 in other Scania systems

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