Scania EMS DTC 7973 Heater 1 for binary lambda sensor, short-circuited to supply voltage

EMS Engine Management System · Scania

Code 7973 (decimal). Some diagnostic tools show it in hexadecimal as 001F25.

In short

The control unit indicates that the lambda sensor is short-circuited to voltage supply.

Applies to: EMS10

What does Scania EMS fault code 7973 mean?

What causes Scania DTC 7973?

How to fix Scania EMS fault code 7973?

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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.