Scania BCI DTC 684 Overload, BCI2 pin C2

BCI BCI control unit · Scania · 4 variants

Code 684 (decimal). Some diagnostic tools show it in hexadecimal as 02AC.

In short

Overload at output. Current drawn at output exceeds 0.2 A.

Variant 1

Applies to: BCI2 (BWE)

What does Scania BCI fault code 684 mean?

What causes Scania DTC 684?

What are the symptoms?

How to fix Scania BCI fault code 684?

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Variant 2

Applies to: BCI3 (BWE)

Variant 3: Powertrain load is not reduced

Applies to: BCI1 (BWE)

Variant 4

Applies to: BCI2 (BWE)

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

Code 684 in other Scania systems

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