Scania EMS DTC 7937 The wide-band lambda sensor indicates a fixed value with engine on

EMS Engine Management System · Scania

Code 7937 (decimal). Some diagnostic tools show it in hexadecimal as 001F01.

In short

The lambda sensor does not respond even though the engine is running.

Applies to: EMS10

What does Scania EMS fault code 7937 mean?

What causes Scania DTC 7937?

How to fix Scania EMS fault code 7937?

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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.