Scania AMS DTC 6401 Exhaust gas temperature sensor T158, internal fault

AMS AMS control unit · Scania

Code 6401 (decimal). Some diagnostic tools show it in hexadecimal as 001901.

In short

The control system indicates a fault in the exhaust gas temperature sensor.

Applies to: AMS2

What does Scania AMS fault code 6401 mean?

What causes Scania DTC 6401?

How to fix Scania AMS fault code 6401?

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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.

Code 6401 in other Scania systems