Scania AMS DTC 6409 T158 exhaust gas temperature sensor upstream of the SCR catalytic converter, electric fault

AMS AMS control unit · Scania

Code 6409 (decimal). Some diagnostic tools show it in hexadecimal as 001909.

In short

Fault in exhaust gas temperature sensor T158 upstream of the SCR catalytic converter.

Applies to: AMS2

What does Scania AMS fault code 6409 mean?

What causes Scania DTC 6409?

How to fix Scania AMS fault code 6409?

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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.