AutoCodes – Chevrolet – P124D 2015 Chevrolet Silverado

P124D 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado 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 782

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 Aug 12, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P124D 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado - Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit - AutoCodes.com — P124D 2015 Chevrolet Silverado Code - Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit

What does this mean?

What are the Possible Causes of the DTC P124D 2015 Chevrolet Silverado?

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 2015 Chevrolet Silverado?

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 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado 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 P124D 2015 Chevrolet Silverado Code

1. What does the OBDII code P124D mean on a 2015 Chevrolet Silverado?

The P124D code indicates that the Injector 6 Positive Voltage Control Circuit is shorted to the control circuit, affecting fuel injector operation.

2. What are the symptoms of code P124D in a 2015 Chevrolet Silverado?

Common symptoms include rough idling, misfires, reduced engine performance, poor fuel efficiency, and the Check Engine Light turning on.

3. What causes the P124D code to appear?

The code can be caused by a shorted fuel injector, damaged wiring or connectors in the circuit, or a faulty powertrain control module (PCM).

4. Can I drive my 2015 Chevrolet Silverado with the P124D code?

Itâ€™s not recommended to drive with this code as it can lead to poor engine performance and potentially damage other components if not addressed.

5. How do you diagnose the P124D code in a 2015 Chevrolet Silverado?

A technician will inspect the wiring and connectors for damage, test the injector circuit for shorts, and use a scan tool to confirm the fault.

6. How is the P124D code fixed?

Repairs may include replacing the faulty injector, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the PCM if necessary.

7. How much does it cost to fix the P124D code on a Silverado?

The repair cost varies, but replacing a fuel injector typically costs $300-$600, and repairing wiring or connectors might cost $100-$300, depending on labor rates.

8. Can a bad PCM cause the P124D code?

Yes, a malfunctioning PCM can trigger this code if it fails to properly control the injector circuit.

9. How can I prevent the P124D code from recurring?

Regular maintenance, inspecting wiring harnesses for wear, and using high-quality fuel can help prevent injector-related issues.

10. Do I need to replace all injectors if I get the P124D code?

No, only the faulty injector (Injector 6 in this case) or the affected circuit components need to be replaced unless other injectors are also failing.