1539

Deutz-Fahr 1539: NOx Sensor Before SCR Catalyst Reports Lambda Value Above Upper Limit

Issue description

The NOx sensor located before the SCR catalyst is detecting a lambda value that exceeds the upper limit. This indicates an issue with the air-fuel mixture or sensor performance, potentially affecting emissions control.

Check the cause

  1. The NOx sensor before SCR catalyst

  2. The component identified by this code

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