Engine-Codes - Generic - P122C

P122C - Nitrogen Oxide Sensor Electric Short Circuit

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

P122C Possible Causes

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

How is the P122C 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 P122C code

Labor: 1.0

The cost to diagnose the P122C 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)

P122C 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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Information for specific makes

  • P122C BMW Nitrogen Oxide Sensor Electric Short Circuit
  • P122C MINI Nitrogen Oxide Sensor Electric Short Circuit

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