AutoCodes – BMW – P122E BMW

P122E BMW 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 BMW 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 11,105

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 03, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P122E BMW 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 BMW - Nitrogen Oxide Sensor Binary Oxygen Sensor Line Disconnection - AutoCodes.com — P122E BMW Code - Nitrogen Oxide Sensor Binary Oxygen Sensor Line Disconnection

What does this mean?

What are the Possible Causes of the DTC P122E BMW?

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 BMW?

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 BMW 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 BMW code?

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

Need Help with the Code?

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

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 BMW Code

1. What are the common symptoms of OBDII code P122E in a BMW related to the Nitrogen Oxide Sensor Binary Oxygen Sensor Line Disconnection?

- The common symptoms include reduced engine performance, poor fuel efficiency, and an illuminated check engine light.

2. What are the possible causes of the P122E code in a BMW?

- The code P122E in a BMW can be triggered by a disconnected or damaged Nitrogen Oxide Sensor Binary Oxygen Sensor line, faulty wiring, or a malfunctioning sensor.

3. How can I diagnose the cause of the P122E code in my BMW?

- To diagnose the P122E code, it is recommended to visually inspect the sensor and its wiring for any signs of damage, check for loose connections, and use an OBDII scanner for further diagnostic information.

4. Can I drive my BMW with the P122E code present?

- It is not advisable to drive your BMW with the P122E code present, as it can lead to further damage to the engine and emissions system. It is recommended to address the issue promptly.

5. How can I repair the Nitrogen Oxide Sensor Binary Oxygen Sensor line disconnection causing the P122E code in my BMW?

- The repair process may involve reconnecting the sensor line, repairing or replacing damaged wiring, or replacing the sensor itself. Consult with a qualified mechanic for proper diagnosis and repair.

6. Is the Nitrogen Oxide Sensor Binary Oxygen Sensor line a common failure point in BMWs?

- While it is not extremely common, issues with the Nitrogen Oxide Sensor Binary Oxygen Sensor line can occur in BMWs due to wear and tear, heat exposure, or external damage.

7. Will resetting the check engine light make the P122E code go away in my BMW?

- Resetting the check engine light may temporarily clear the code, but if the underlying issue causing the P122E code is not addressed, the code is likely to return.

8. How much does it typically cost to repair the P122E code in a BMW?

- The cost of repairing the P122E code in a BMW can vary depending on the extent of the damage, parts needed, and labor rates. It is recommended to obtain quotes from different repair shops for an accurate estimate.

9. Can a DIY enthusiast fix the P122E code in a BMW?

- Depending on the DIY enthusiast's skill level and access to tools, it may be possible to address the P122E code by reconnecting the sensor line or repairing wiring. However, complex diagnostic and repair tasks may require professional assistance.

10. Are there any maintenance tips to prevent the recurrence of the P122E code in a BMW?

- To prevent the recurrence of the P122E code, regular inspection of the emissions system, timely maintenance, and avoiding harsh driving conditions can help maintain the health of the Nitrogen Oxide Sensor Binary Oxygen Sensor line.