AutoCodes – Chevrolet – P124E 2015 Chevrolet Silverado

P124E 2015 Chevrolet Silverado Code - Cylinder 7 Injector High 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 7, Fuel Injector 7 harness is open or shorted, Fuel Injector 7 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: P124E 2015 Chevrolet Silverado indicates Cylinder 7 Injector High Control Circuit Shorted to Control Circuit.
Common causes: Common causes include Faulty Fuel Injector 7, Fuel Injector 7 harness is open or shorted, Fuel Injector 7 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 392

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 P124E 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 P124E 2015 Chevrolet Silverado - Cylinder 7 Injector High Control Circuit Shorted to Control Circuit - AutoCodes.com — P124E 2015 Chevrolet Silverado Code - Cylinder 7 Injector High Control Circuit Shorted to Control Circuit

What does this mean?

What are the Possible Causes of the DTC P124E 2015 Chevrolet Silverado?

Faulty Fuel Injector 7
Fuel Injector 7 harness is open or shorted
Fuel Injector 7 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P124E 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 P124E 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 P124E 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 P124E 2015 Chevrolet Silverado Code

1. What does OBDII code P124E mean on a 2015 Chevrolet Silverado?

P124E indicates a fault in the Cylinder 7 injector high control circuit, specifically a short between the high control circuit and the control circuit.

2. What are the common symptoms of code P124E in a 2015 Chevrolet Silverado?

Symptoms include rough idling, poor engine performance, reduced fuel efficiency, misfires on cylinder 7, and possibly an illuminated check engine light.

3. What causes the P124E code to appear on a 2015 Chevrolet Silverado?

Common causes include damaged or shorted wiring in the injector circuit, a faulty injector for cylinder 7, a poor connection at the injector harness, or an issue with the engine control module (ECM).

4. Can I drive my 2015 Chevrolet Silverado with a P124E code?

Driving with a P124E code is not recommended as it can lead to further engine damage, reduced performance, and increased emissions.

5. How do I diagnose the P124E code on a 2015 Chevrolet Silverado?

Diagnosis involves inspecting the wiring and connectors for damage, testing the cylinder 7 injector for proper resistance, and checking the ECM for proper output to the injector.

6. How much does it cost to repair the P124E code on a 2015 Chevrolet Silverado?

Repair costs vary depending on the issue. Replacing the injector may cost $200-$400, while wiring repairs or ECM replacement could cost more.

7. Can a faulty injector cause the P124E code on a 2015 Chevrolet Silverado?

Yes, a faulty cylinder 7 injector can create a short circuit and trigger the P124E code.

8. What tools are needed to troubleshoot the P124E code on a 2015 Chevrolet Silverado?

Tools include a scan tool capable of reading live data, a digital multimeter to test resistance and voltage, and wiring diagrams for the injector circuit.

9. Does the P124E code always require replacing the cylinder 7 injector?

Not always. The issue could be related to wiring, connectors, or the ECM rather than the injector itself.

10. How can I prevent the P124E code from returning on my 2015 Chevrolet Silverado?

Regularly inspect and maintain the injector wiring and connectors, address any engine performance issues promptly, and use high-quality fuel to prevent injector wear.