Engine-CodesChevrolet – P124A 2016 Chevrolet Silverado

P124A 2016 Chevrolet Silverado Code - Injector 3 Positive Voltage Control Circuit Shorted to Control Circuit

Quick Answer

The P124A diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates that there is a short circuit between the positive voltage control circuit and the control circuit of injector 3. Common causes include Damaged wiring in the positive voltage control circuit, Faulty fuel injector for cylinder 3, Malfunctioning engine control module (ECM). 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 2016 Chevrolet Silverado indicates Injector 3 Positive Voltage Control Circuit Shorted to Control Circuit.
Common causes
Common causes include Damaged wiring in the positive voltage control circuit, Faulty fuel injector for cylinder 3, Malfunctioning engine control module (ECM).
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.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P124A 2016 Chevrolet Silverado Description

The P124A diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates that there is a short circuit between the positive voltage control circuit and the control circuit of injector 3. In simpler terms, this means that there is an electrical issue in the wiring that controls the fuel injector for cylinder 3. The fuel injector is responsible for delivering the precise amount of fuel into the combustion chamber at the right time. When there is a short circuit in the control circuit, it can disrupt the injector's operation, leading to potential performance issues.

OBDII Code P124A 2016 Chevrolet Silverado - Injector 3 Positive Voltage Control Circuit Shorted to Control Circuit
P124A 2016 Chevrolet Silverado Code - Injector 3 Positive Voltage Control Circuit Shorted to Control Circuit

Common Causes of P124A 2016 Chevrolet Silverado

  1. Damaged wiring in the positive voltage control circuit
  2. Faulty fuel injector for cylinder 3
  3. Malfunctioning engine control module (ECM)
  4. Poor electrical connection
  5. Corrosion in the wiring harness

Symptoms of P124A 2016 Chevrolet Silverado

  1. Engine misfires
  2. Rough idling
  3. Decreased fuel efficiency
  4. Loss of power
  5. Check Engine Light illuminated

How to Fix P124A 2016 Chevrolet Silverado

  1. Diagnose the issue using a scan tool to confirm the P124A code and pinpoint the exact cause of the short circuit.
  2. Inspect the wiring harness for any damage or corrosion. Repair or replace any damaged wires.
  3. Test the fuel injector for cylinder 3 to ensure it is functioning correctly. Replace if necessary.
  4. Check the engine control module (ECM) for any faults or malfunctions. Repair or replace as needed.
  5. Clear the DTCs and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P124A 2016 Chevrolet Silverado

The typical repair costs for addressing a P124A code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of parts such as a new fuel injector or wiring harness can range from $100 to $500, while labor costs can range from $150 to $300. Overall, the total repair cost for this issue may fall between $250 and $800. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and labor rates at the auto repair shop. It is recommended to obtain a detailed quote from a qualified mechanic before proceeding with the repair.

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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 2016 Chevrolet Silverado Code

What does the OBDII code P124A mean for a 2016 Chevrolet Silverado?

P124A indicates that there is a short circuit between the positive voltage control circuit and the control circuit for injector 3.

What are the common symptoms of code P124A in a 2016 Chevrolet Silverado?

Symptoms may include rough idling, misfire on cylinder 3, reduced engine performance, or the Check Engine Light being illuminated.

What causes the P124A code to appear in a 2016 Chevrolet Silverado?

Common causes include damaged wiring, a short circuit in the injector 3 control or power circuit, a faulty fuel injector, or issues with the engine control module (ECM).

How can I diagnose the P124A code in my 2016 Chevrolet Silverado?

Start by inspecting the wiring and connectors for injector 3, check for shorts or damage, test the injector’s resistance, and use a scan tool to monitor ECM signals.

Can I drive my 2016 Chevrolet Silverado with the P124A code?

Driving with this code is not recommended, as it can lead to poor performance, increased fuel consumption, and potential engine damage.

How do I fix the P124A code in a 2016 Chevrolet Silverado?

Repairs may include repairing or replacing damaged wiring, replacing the injector 3 if faulty, or reprogramming or replacing the ECM if necessary.

How much does it cost to repair the P124A code in a 2016 Chevrolet Silverado?

The cost varies depending on the issue but can range from $50 to $500, with injector replacement typically costing more than wiring repairs.

Can a failing ECM cause the P124A code in a 2016 Chevrolet Silverado?

Yes, a malfunctioning ECM can cause incorrect signals to the injector, leading to the P124A code.

How can I prevent the P124A code from recurring in my 2016 Chevrolet Silverado?

Regularly inspect and maintain wiring, ensure proper installation of injectors, and address any electrical issues promptly.

Do I need special tools to fix the P124A code on a 2016 Chevrolet Silverado?

Yes, tools like a multimeter for testing resistance and a diagnostic scan tool to read and clear codes are usually required.

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