AutoCodes – Generic – P124D

P124D 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 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 5,759
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 23, 2024
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Code P124D 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 - Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit - AutoCodes.com
P124D Code - Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit

What are the Possible Causes of the DTC P124D?

  • 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?

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 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 P124D code?

Need more information on how to fix the P124D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P124D code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • P124D BMW β€” Nitrogen Oxide Sensor Operational Readiness Signal Not Available During Operation
  • P124D Buick β€” Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit
  • P124D Cadillac β€” Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit
  • P124D Chevrolet β€” Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit
  • P124D GMC β€” Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit
  • P124D MINI β€” Nitrogen Oxide Sensor Operational Readiness Signal Not Available During Operation
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 Code

1. What are the common symptoms of OBDII code P124D?

The common symptoms of OBDII code P124D include rough idling, engine misfires, poor fuel efficiency, and in some cases, the Check Engine Light may illuminate.

2. What does the OBDII code P124D mean?

OBDII code P124D indicates that the positive voltage control circuit for Injector 6 is shorted to the control circuit.

3. What are the possible causes of OBDII code P124D?

Possible causes of OBDII code P124D include a faulty injector, wiring issues, a damaged connector, or a problem with the Engine Control Module (ECM).

4. How can I diagnose the OBDII code P124D?

Diagnosing OBDII code P124D typically involves inspecting the wiring and connectors associated with Injector 6, testing the injector for proper function, and using a scan tool to check for related fault codes.

5. Can I continue driving with OBDII code P124D?

It is not recommended to continue driving with OBDII code P124D present, as it can lead to engine performance issues and potentially cause further damage if left unresolved.

6. How can I repair OBDII code P124D?

Repairing OBDII code P124D may involve replacing the faulty injector, repairing any damaged wiring or connectors, or reprogramming the ECM, depending on the exact cause of the issue.

7. Is it safe to clear the OBDII code P124D without fixing the underlying issue?

Clearing the OBDII code P124D without fixing the underlying issue is not recommended, as the problem will likely resurface, and unresolved issues can lead to more severe problems over time.

8. How much does it typically cost to repair OBDII code P124D?

The cost of repairing OBDII code P124D can vary depending on the exact cause of the issue, but it may range from a few hundred dollars to over a thousand dollars, including parts and labor.

9. Can a DIY enthusiast fix OBDII code P124D at home?

Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to diagnose and fix OBDII code P124D at home. However, complex issues may require professional assistance.

10. How can I prevent OBDII code P124D from occurring in the future?

To prevent OBDII code P124D from occurring in the future, it is essential to perform regular maintenance on your vehicle, including checking the condition of injectors, wiring, and connectors, and addressing any issues promptly.

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