AutoCodes – MINI – P124C MINI

P124C MINI Code - Nitrogen Oxide Sensor Operating Readiness Signal Not Available At Start

Quick Answer

The Engine Control Module (ECM) monitors the NOx Sensor. Common causes include Faulty NOx Sensor, NOx Sensor harness is open or shorted, 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: P124C MINI indicates Nitrogen Oxide Sensor Operating Readiness Signal Not Available At Start.
Common causes: Common causes include Faulty NOx Sensor, NOx Sensor harness is open or shorted, 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 1,052

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 Aug 12, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P124C MINI Description

The Engine Control Module (ECM) monitors the NOx Sensor. The ECM sets the OBDII code when the NOx Sensor is not to factory specifications.

OBDII Code P124C MINI - Nitrogen Oxide Sensor Operating Readiness Signal Not Available At Start - AutoCodes.com — P124C MINI Code - Nitrogen Oxide Sensor Operating Readiness Signal Not Available At Start

What does this mean?

What are the Possible Causes of the DTC P124C MINI?

Faulty NOx Sensor
NOx Sensor harness is open or shorted
NOx Sensor circuit poor electrical connection

How to Fix the DTC P124C 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 P124C 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.

Need more information about the P124C MINI code?

Need more information on how to fix the P124C MINI code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P124C MINI 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 P124C MINI Code

1. What are the common symptoms of OBDII code P124C in a MINI vehicle?

- Common symptoms include the check engine light coming on, reduced engine performance, and potential emissions-related issues.

2. What does the OBDII code P124C MINI mean?

- The code P124C indicates that the Nitrogen Oxide Sensor Operating Readiness Signal is not available at start in a MINI vehicle.

3. What are the possible causes of the P124C code in a MINI?

- The code P124C can be triggered by issues with the nitrogen oxide sensor, wiring harness faults, software glitches, or a faulty engine control module.

4. How can I diagnose the P124C code in my MINI?

- Diagnosing the P124C code typically involves using an OBDII scanner to retrieve the code, checking the sensor and wiring connections, and potentially performing a software update.

5. Can I continue driving my MINI with the P124C code present?

- It is generally not recommended to continue driving your MINI with the P124C code illuminated, as it can lead to further engine or emissions system issues if left unresolved.

6. How can I repair the P124C code in my MINI?

- Repairing the P124C code may involve replacing the nitrogen oxide sensor, repairing any wiring faults, updating the engine control module software, or seeking assistance from a professional mechanic.

7. Is the P124C code a serious issue in a MINI?

- While the P124C code may not cause immediate drivability issues, it is essential to address it promptly to prevent potential damage to the engine or emissions system in the long run.

8. Can a DIY enthusiast fix the P124C code in a MINI?

- Depending on your automotive skills and access to tools, you may be able to address the P124C code yourself by following repair guides or seeking assistance from online forums.

9. How much does it cost to repair the P124C code in a MINI at a dealership?

- The cost of repairing the P124C code at a dealership can vary depending on the exact cause of the issue, but it may involve parts and labor costs ranging from a few hundred to over a thousand dollars.

10. Are there any preventive measures to avoid the P124C code in a MINI?

- Regular maintenance, such as checking and replacing the nitrogen oxide sensor at recommended intervals, can help prevent the occurrence of the P124C code in your MINI.