AutoCodes – MINI – P128B MINI

P128B MINI Code - Nitrogen Oxide Sensor Regeneration Nitrogen Oxide Cat Time Controlled Regeneration Abort

Quick Answer

The Engine Control Module (ECM) monitors the Nitrogen Oxide (NOx) Sensor. Common causes include Faulty Nitrogen Oxide (NOx) Sensor, Nitrogen Oxide (NOx) Sensor harness is open or shorted, Nitrogen Oxide (NOx) 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: P128B MINI indicates Nitrogen Oxide Sensor Regeneration Nitrogen Oxide Cat Time Controlled Regeneration Abort.
Common causes: Common causes include Faulty Nitrogen Oxide (NOx) Sensor, Nitrogen Oxide (NOx) Sensor harness is open or shorted, Nitrogen Oxide (NOx) 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 1,228

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P128B MINI Description

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.

OBDII Code P128B MINI - Nitrogen Oxide Sensor Regeneration Nitrogen Oxide Cat Time Controlled Regeneration Abort - AutoCodes.com — P128B MINI Code - Nitrogen Oxide Sensor Regeneration Nitrogen Oxide Cat Time Controlled Regeneration Abort

What does this mean?

What are the Possible Causes of the DTC P128B MINI?

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

How to Fix the DTC P128B MINI?

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 P128B MINI 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.

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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 P128B MINI Code

1. What does the OBDII code P128B MINI indicate?

The code P128B MINI refers to Nitrogen Oxide Sensor Regeneration Nitrogen Oxide Cat Time Controlled Regeneration Abort.

2. What are the common symptoms of the P128B MINI code?

Common symptoms include reduced engine performance, increased fuel consumption, and possibly a check engine light illuminating on the dashboard.

3. What are the possible causes of the P128B MINI code?

Possible causes include a faulty nitrogen oxide sensor, issues with the catalytic converter, sensor wiring problems, or a malfunction in the regeneration system.

4. How can I diagnose the P128B MINI code?

Diagnosing the code typically involves using an OBDII scanner to retrieve the specific error code and analyzing the sensor data to pinpoint the issue.

5. Can I continue driving with the P128B MINI code present?

It is not recommended to continue driving with the P128B MINI code as it can lead to further damage to the vehicle's emission control system.

6. How can I repair the P128B MINI code?

Repairing the code may involve replacing the nitrogen oxide sensor, repairing or replacing the catalytic converter, checking and fixing any wiring issues, or resetting the regeneration system.

7. Is the P128B MINI code a serious issue?

While the severity of the issue can vary, it is important to address the P128B MINI code promptly to prevent any potential long-term damage to the vehicle's emission control system.

8. Can I reset the P128B MINI code myself?

You can attempt to reset the code using an OBDII scanner, but it is advisable to diagnose and fix the underlying issue to prevent the code from reoccurring.

9. How much does it typically cost to repair the P128B MINI code?

The cost of repairing the P128B MINI code can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. How often does the nitrogen oxide sensor regeneration system need to be serviced?

It is recommended to follow the manufacturer's maintenance schedule for servicing the nitrogen oxide sensor regeneration system to prevent issues like the P128B MINI code from occurring.