AutoCodes – BMW – P122F BMW

P122F BMW Code - Nitrogen Oxide Sensor Binary Oxygen Sensor Short Circuit

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
P122F BMW indicates Nitrogen Oxide Sensor Binary Oxygen Sensor Short Circuit.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 23,622
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 P122F 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 P122F BMW - Nitrogen Oxide Sensor Binary Oxygen Sensor Short Circuit - AutoCodes.com
P122F BMW Code - Nitrogen Oxide Sensor Binary Oxygen Sensor Short Circuit

What are the Possible Causes of the DTC P122F 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 P122F 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 P122F 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 P122F BMW code?

Need more information on how to fix the P122F BMW code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P122F BMW Code

What does the OBDII code P122F indicate in a BMW?

The OBDII code P122F indicates a short circuit issue in the nitrogen oxide sensor's binary oxygen sensor circuit.

What are common symptoms of the P122F code?

Common symptoms include poor engine performance, increased emissions, a check engine light, and potential issues with fuel efficiency.

What can cause the P122F code to trigger?

Causes may include a faulty nitrogen oxide sensor, damaged wiring or connectors, a short circuit in the electrical system, or issues with the engine control module (ECM).

How can I diagnose the P122F code?

Diagnosing the P122F code typically involves using an OBDII scanner to confirm the code, inspecting the wiring and connectors for damage, and testing the nitrogen oxide sensor for proper functionality.

What steps can I take to repair the P122F code?

Repair steps may include replacing the nitrogen oxide sensor if faulty, repairing any damaged wiring or connectors, and clearing the code to see if it reappears after repairs.

Can I drive my BMW with the P122F code active?

While you can drive with the P122F code active, it is not advisable as it may lead to poor performance and increased emissions. It's best to address the issue promptly.

Will the P122F code cause my engine to fail?

While the P122F code itself won't directly cause engine failure, ignoring it can lead to further complications, including more serious engine or emission system problems.

Is the P122F code specific to BMW vehicles?

The P122F code is not exclusive to BMW vehicles; it can appear in various makes and models that utilize similar nitrogen oxide sensors and systems.

How much does it typically cost to fix the P122F code?

The cost to fix the P122F code can vary widely, ranging from $100 to $500 or more, depending on whether you need to replace sensors or repair wiring issues.

Discuss the causes and fixes for P122F BMW OBDII Code

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