Engine-Codes - Bmw - P127B BMW

P127B BMW - Nitrogen Oxide Sensor Overrun Test NOx Signal Too Low

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

P127B BMW Possible Causes

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

How is the P127B BMW 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 P127B BMW code

Labor: 1.0

The cost to diagnose the P127B BMW 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)

P127B BMW Meaning

The Engine Control Module (ECM) monitors the Nitrogen Oxide Sensor (NOx). The ECM sets the OBDII code when the Nitrogen Oxide Sensor (NOx) is not to factory specifications.

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