AutoCodes – Generic – P122E

P122E Code - Nitrogen Oxide Sensor Binary Oxygen Sensor Line Disconnection

Quick Answer

The Engine Control Module (ECM) monitors the Nitrogen Oxide Sensor Binary Oxygen Sensor. Common causes include Faulty Nitrogen Oxide Sensor Binary Oxygen Sensor, Nitrogen Oxide Sensor Binary Oxygen Sensor harness is open or shorted, Nitrogen Oxide Sensor Binary Oxygen Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P122E indicates Nitrogen Oxide Sensor Binary Oxygen Sensor Line Disconnection.
Common causes
Common causes include Faulty Nitrogen Oxide Sensor Binary Oxygen Sensor, Nitrogen Oxide Sensor Binary Oxygen Sensor harness is open or shorted, Nitrogen Oxide Sensor Binary Oxygen Sensor circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 4,348
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 03, 2019
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Code P122E Description

The Engine Control Module (ECM) monitors the Nitrogen Oxide Sensor Binary Oxygen Sensor. The ECM sets the OBDII code when the Nitrogen Oxide Sensor Binary Oxygen Sensor is not to factory specifications.
OBDII Code P122E - Nitrogen Oxide Sensor Binary Oxygen Sensor Line Disconnection - AutoCodes.com
P122E Code - Nitrogen Oxide Sensor Binary Oxygen Sensor Line Disconnection

What are the Possible Causes of the DTC P122E?

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

How to Fix the DTC P122E?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P122E code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P122E code?

Need more information on how to fix the P122E code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P122E code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • P122E BMW β€” Nitrogen Oxide Sensor Binary Oxygen Sensor Line Disconnection
  • P122E MINI β€” Nitrogen Oxide Sensor Binary Oxygen Sensor Line Disconnection
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P122E Code

1. What are the common symptoms of OBDII code P122E (Nitrogen Oxide Sensor Binary Oxygen Sensor Line Disconnection)?

When this code is present, you may experience decreased engine performance, increased fuel consumption, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P122E?

Code P122E can be triggered by issues such as a faulty nitrogen oxide sensor, damaged oxygen sensor wiring, or a disconnection in the binary oxygen sensor line.

3. How can I diagnose OBDII code P122E?

Diagnosing this code typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the nitrogen oxide sensor and oxygen sensor wiring, and checking for any loose or disconnected connections.

4. Is it safe to continue driving with OBDII code P122E present?

It is not recommended to drive with this code present, as it can lead to further damage to the vehicle and potentially cause more serious issues over time.

5. How can I repair OBDII code P122E?

To repair this code, you may need to replace the faulty nitrogen oxide sensor, repair any damaged wiring or connections, and clear the code using an OBDII scanner.

6. Can I fix OBDII code P122E on my own, or should I seek professional help?

Depending on your automotive repair skills and knowledge, you may be able to address this code on your own by following diagnostic and repair procedures. However, if you are unsure or uncomfortable with the process, it is recommended to seek professional help.

7. Are there any preventive measures to avoid OBDII code P122E from occurring?

Regular maintenance of your vehicle, including checking the sensors and wiring for signs of wear or damage, can help prevent the occurrence of this code.

8. Will OBDII code P122E cause my vehicle to fail emissions testing?

Since this code can impact emissions and overall engine performance, it may cause your vehicle to fail emissions testing. It is important to address the issue promptly to ensure compliance.

9. How long does it typically take to repair OBDII code P122E?

The repair time for this code can vary depending on the extent of the issue and the availability of parts. In some cases, it can be resolved relatively quickly, while in others, it may require more time and effort.

10. Can OBDII code P122E affect the overall drivability of my vehicle?

Yes, this code can affect the drivability of your vehicle by causing issues such as poor engine performance, increased fuel consumption, and potential stalling. Addressing the code promptly is important to maintain optimal drivability.

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