Scania DCC DTC 840 Internal fault in the direct current converter

DCC DCC control unit · Scania

Code 840 (decimal). Some diagnostic tools show it in hexadecimal as 0348.

In short

Incorrect temperature signal internally in the direct current converter.

Applies to: DCC2 (DCC)DCC2 (DCCXA)DCC2 (DCCXB)

What does Scania DCC fault code 840 mean?

What causes Scania DTC 840?

How does the system react?

How to fix Scania DCC fault code 840?

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

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