Engine-Codes - Mini - P123D MINI

P123D MINI - Nitrogen Oxide Sensor Sensor Poisoning Binary Lambda Signal Too Rich

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P123D MINI Possible Causes

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

How is the P123D MINI code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P123D MINI code

Labor: 1.0

The cost to diagnose the P123D MINI code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P123D MINI Meaning

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.

More Information

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