P123E - Nitrogen Oxide Sensor Sensor Poisoning NOx Signal Too Low

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Nitrogen Oxide (NOx)
  • Nitrogen Oxide (NOx) harness is open or shorted
  • Nitrogen Oxide (NOx) circuit poor electrical connection

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P123e Description

The Engine Control Module (ECM) monitors the Nitrogen Oxide Sensor. The ECM sets the OBDII code when the Nitrogen Oxide Sensor is not to factory specifications.
OBDII Code P123e - Nitrogen Oxide Sensor Sensor Poisoning NOx Signal Too Low - AutoCodes.com

P123E Information for specific makes

  • P123E BMW Nitrogen Oxide Sensor Sensor Poisoning NOx Signal Too Low
  • P123E MINI Nitrogen Oxide Sensor Sensor Poisoning NOx Signal Too Low

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P123E Comments

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