Engine-Codes - Generic - P126C

P126C - Nitrogen Oxide Sensor Adjustment Fault At Start Of Charging Phase

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

P126C Possible Causes

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

How do I fix code P126C?

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's pins.

Cost of diagnosing the P126C code

Labor: 1.0

The cost of diagnosing the P126C 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)

P126C Meaning

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

P126C More Information

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Information for specific makes

  • P126C BMW Nitrogen Oxide Sensor Adjustment Fault At Start Of Charging Phase
  • P126C FORD Fuel Injector 3 Input Circuit Malfunction
  • P126C MINI Nitrogen Oxide Sensor Adjustment Fault At Start Of Charging Phase

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