AutoCodes – Chevrolet – P124A 2014 Chevrolet Silverado

P124A 2014 Chevrolet Silverado Code - Injector 3 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 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 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: P124A 2014 Chevrolet Silverado indicates Injector 3 Positive Voltage Control Circuit Shorted to Control Circuit.
Common causes: Common causes include Faulty Fuel Injector 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 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 357

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 P124A 2014 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 P124A 2014 Chevrolet Silverado - Injector 3 Positive Voltage Control Circuit Shorted to Control Circuit - AutoCodes.com — P124A 2014 Chevrolet Silverado Code - Injector 3 Positive Voltage Control Circuit Shorted to Control Circuit

What does this mean?

What are the Possible Causes of the DTC P124A 2014 Chevrolet Silverado?

Faulty Fuel Injector 3
Fuel Injector 3 harness is open or shorted
Fuel Injector 3 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P124A 2014 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 P124A 2014 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 P124A 2014 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 P124A 2014 Chevrolet Silverado Code

What does OBDII code P124A mean for a 2014 Chevrolet Silverado?

OBDII code P124A indicates that there is a problem with the injector 3 positive voltage control circuit, which is shorted to the control circuit, affecting the fuel injector's operation.

What are the common symptoms of code P124A?

Common symptoms include rough engine idle, misfiring, reduced engine performance, increased fuel consumption, and the check engine light being illuminated.

What could cause OBDII code P124A to trigger?

Possible causes include a short circuit in the wiring harness, a faulty fuel injector, an issue with the engine control module (ECM), or poor electrical connections.

How can I diagnose code P124A in my Silverado?

Start by visually inspecting the wiring and connectors for damage or corrosion. Use a multimeter to check the voltage and continuity of the injector circuit. If necessary, test the fuel injector itself for proper operation.

What are some potential repair solutions for code P124A?

Repair solutions may include repairing or replacing damaged wiring, connectors, or the fuel injector. If the ECM is at fault, reprogramming or replacing it may be necessary.

Can I drive my Silverado with code P124A?

While you may be able to drive with this code, it is not advisable as it can lead to further engine problems and reduced performance. It's best to address the issue promptly.

Will clearing the code P124A make the problem go away?

Clearing the code may temporarily turn off the check engine light, but if the underlying issue is not resolved, the code will likely reappear.

How much does it typically cost to repair code P124A?

Repair costs can vary widely depending on the cause of the issue. Simple wiring repairs may cost $100-$300, while replacing a fuel injector or ECM can range from $300 to $1,000 or more.

Is code P124A related to any other OBDII codes?

Yes, code P124A may be accompanied by other codes related to fuel injector problems or engine performance issues, such as P0203 (Injector Circuit Malfunction) or P0300 (Random/Multiple Cylinder Misfire).