Scania DCU DTC 791 Emergency opening system reset valve A, output, short circuit

DCU DCU control unit · Scania

Code 791 (decimal). Some diagnostic tools show it in hexadecimal as 0317.

In short

- Maximum current level has been detected on the 24 V output of the reset valve (CN6-11).

Applies to: DCU3 (DCUA)DCU3 (DCUF)DCU3 (DCUM)DCU3 (DCUR)

What does Scania DCU fault code 791 mean?

What causes Scania DTC 791?

How does the system react?

What are the symptoms?

How to fix Scania DCU fault code 791?

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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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