Engine-Codes - BMW - P123D BMW

P123D BMW Code - Nitrogen Oxide Sensor Sensor Poisoning Binary Lambda Signal Too Rich

- Code Popularity: 1,206 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P123D BMW?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other 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
⚠ Does your BMW have Safety Recalls? → Check here

How to Fix the DTC P123D BMW?

Check 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 pins.

Search for P123D BMW Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P123D BMW code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P123D BMW Code Mean?

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.

P123D BMW Code - Nitrogen Oxide Sensor Sensor Poisoning Binary Lambda Signal Too Rich

Need more Information on the Code?

Need more information on how to fix the P123D BMW code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P123D BMW code diagnosed by a professional: Find a repair shop in your area