AutoCodes – Buick – P124D Buick

P124D Buick Code - Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit

Quick Answer

The Engine Control Module (ECM) supplies voltage to each fuel injector on the injector high voltage supply circuits. Common causes include Faulty Fuel Injector 6, Fuel Injector 6 harness is open or shorted, Fuel Injector 6 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: P124D Buick indicates Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit.
Common causes: Common causes include Faulty Fuel Injector 6, Fuel Injector 6 harness is open or shorted, Fuel Injector 6 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 456

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 Mar 23, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P124D Buick Description

The Engine Control Module (ECM) supplies voltage to each fuel injector on the injector high voltage supply circuits. The ECM energizes each fuel injector by grounding the high voltage control circuit of the fuel injector. The ECM monitors the status of the injector high voltage supply circuits and the fuel injector high voltage control circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled. The Diagnostic Trouble Code (DTC) will be set if the ECM detects the injector high control circuit is shorted to the low control circuit for greater than 2 s.

OBDII Code P124D Buick - Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit - AutoCodes.com — P124D Buick Code - Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit

What does this mean?

What are the Possible Causes of the DTC P124D Buick?

Faulty Fuel Injector 6
Fuel Injector 6 harness is open or shorted
Fuel Injector 6 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P124D Buick?

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 P124D Buick 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 P124D Buick Code

1. What are common symptoms of OBDII code P124D in a Buick?

The common symptoms of code P124D in a Buick may include rough idling, engine misfires, decreased fuel efficiency, and in some cases, the vehicle may go into limp mode.

2. What causes the OBDII code P124D in a Buick?

The OBDII code P124D in a Buick is typically caused by a short circuit between the positive voltage control circuit and the control circuit of injector 6.

3. How serious is OBDII code P124D in a Buick?

Code P124D should be addressed promptly as it can affect the performance and fuel efficiency of the vehicle. Ignoring this code may lead to further engine issues if left unresolved.

4. Can I continue driving my Buick with OBDII code P124D?

It is not recommended to continue driving your Buick with OBDII code P124D as it can cause further damage to the engine and may result in more costly repairs.

5. How can I diagnose OBDII code P124D in my Buick?

Diagnosing code P124D involves using a diagnostic scanner to read the code, inspecting the wiring harness and connectors related to injector 6, and testing the injector itself for any faults.

6. How can I repair OBDII code P124D in my Buick?

To repair code P124D, you may need to repair or replace the wiring harness, repair any damaged connectors, and potentially replace injector 6 if it is found to be faulty.

7. Can a DIY enthusiast fix OBDII code P124D in a Buick?

While some DIY enthusiasts may be able to address code P124D by following repair guides and using the right tools, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

8. How much does it cost to fix OBDII code P124D in a Buick?

The cost of fixing OBDII code P124D in a Buick can vary depending on the extent of the damage and the parts needing replacement. Repair costs may range from a few hundred to over a thousand dollars.

9. Is it common for Buicks to experience OBDII code P124D?

While OBDII code P124D is not exclusive to Buick vehicles, it can occur in any vehicle with similar injector control circuitry. Regular maintenance and prompt repairs can help prevent this code from appearing.

10. Can OBDII code P124D in a Buick cause long-term engine damage?

If left unaddressed, OBDII code P124D can potentially cause long-term engine damage due to the impact on fuel delivery and combustion efficiency. It is important to address this code promptly to avoid further issues.