Scania AMS DTC 6404 Temperature sensor T158, voltage supply fault

AMS AMS control unit · Scania

Code 6404 (decimal). Some diagnostic tools show it in hexadecimal as 001904.

In short

Temperature sensor indicates a fault in the voltage supply pin.

Applies to: AMS2

What does Scania AMS fault code 6404 mean?

What causes Scania DTC 6404?

How to fix Scania AMS fault code 6404?

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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.