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Engine-Codes – Chevrolet – P124E 2018 Chevrolet Silverado

P124E 2018 Chevrolet Silverado Code - Cylinder 7 Injector High Control Circuit Shorted to Control Circuit

Quick Answer

The P124E diagnostic trouble code (DTC) indicates a malfunction in the fuel injection system of a 2018 Chevrolet Silverado, specifically related to the injector for cylinder 7. Common causes include Damaged or frayed wiring in the injector control circuit, Corroded or loose electrical connectors related to the fuel injector, Faulty fuel injector that may be shorted internally. 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 2018 Chevrolet Silverado indicates Cylinder 7 Injector High Control Circuit Shorted to Control Circuit.
Common causes
Common causes include Damaged or frayed wiring in the injector control circuit, Corroded or loose electrical connectors related to the fuel injector, Faulty fuel injector that may be shorted internally.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 21, 2024
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Code P124E 2018 Chevrolet Silverado Description

The P124E diagnostic trouble code (DTC) indicates a malfunction in the fuel injection system of a 2018 Chevrolet Silverado, specifically related to the injector for cylinder 7. This code signifies that the control circuit for the injector has shorted to the control circuit itself, which can lead to improper fuel delivery to the cylinder. When the engine control module (ECM) detects that the voltage levels in the injector circuit are outside of the expected range, it triggers this code.

OBDII Code P124E 2018 Chevrolet Silverado - Cylinder 7 Injector High Control Circuit Shorted to Control Circuit
P124E 2018 Chevrolet Silverado Code - Cylinder 7 Injector High Control Circuit Shorted to Control Circuit

Common Causes of P124E 2018 Chevrolet Silverado

  1. Damaged or frayed wiring in the injector control circuit.
  2. Corroded or loose electrical connectors related to the fuel injector.
  3. Faulty fuel injector that may be shorted internally.
  4. Malfunctioning engine control module (ECM) or injector driver circuit.
  5. Issues with the vehicle's ground connections that can affect electrical signals.

Symptoms of P124E 2018 Chevrolet Silverado

  1. Engine misfires, particularly under load or acceleration.
  2. Rough idling or stalling of the engine.
  3. Decreased fuel efficiency and increased fuel consumption.
  4. Illuminated check engine light (CEL) on the dashboard.
  5. Unusual engine noises, such as knocking or pinging, due to improper combustion.

How to Fix P124E 2018 Chevrolet Silverado

  1. Visual Inspection: Start with a thorough visual inspection of the wiring harness and connectors associated with the cylinder 7 injector. Look for any signs of damage, corrosion, or loose connections.
  2. Electrical Testing: Use a multimeter to test the voltage and resistance in the injector circuit. Check for continuity and ensure that there are no shorts to ground or other circuits.
  3. Injector Replacement: If the injector is found to be faulty, replace it with a new or remanufactured unit. Ensure that the new injector is compatible with the vehicle's specifications.
  4. Repair Wiring: If damaged wiring is identified, repair or replace the affected sections of the wiring harness. Ensure that all connections are secure and free from corrosion.
  5. ECM Diagnostics: If the issue persists, perform a diagnostic check on the ECM to determine if it is functioning correctly. Reprogram or replace the ECM if necessary.

Cost to Fix P124E 2018 Chevrolet Silverado

The typical repair costs for addressing a P124E code can range from $200 to $800, depending on the specific repairs needed. This estimate includes parts such as a new fuel injector (which can cost between $50 and $200) and any necessary wiring or connectors. Labor costs can vary widely based on location and the specific auto repair shop. Most shops charge between $80 and $150 per hour; however, rates may be higher in metropolitan areas or at dealerships. Independent shops often offer lower rates. It is advisable to check local labor rates for a more precise estimate. Additionally, diagnostic time may add to the total cost, typically ranging from 1 to 2 hours.

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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 2018 Chevrolet Silverado Code

What are the common symptoms of OBDII code P124E in a 2018 Chevrolet Silverado?

Common symptoms of OBDII code P124E in a 2018 Chevrolet Silverado may include rough idling, engine misfires, decreased fuel efficiency, and the illumination of the Check Engine Light.

What can cause the OBDII code P124E in a 2018 Chevrolet Silverado?

The OBDII code P124E in a 2018 Chevrolet Silverado is typically caused by a short circuit between the control circuits of cylinder 7 injector high and low.

How serious is the OBDII code P124E in a 2018 Chevrolet Silverado?

While the OBDII code P124E in a 2018 Chevrolet Silverado may not cause immediate engine failure, it can lead to poor engine performance and decreased fuel efficiency if left unresolved.

How can I diagnose the OBDII code P124E in a 2018 Chevrolet Silverado?

Diagnosing the OBDII code P124E in a 2018 Chevrolet Silverado involves using a scan tool to check for the code, inspecting the wiring harness for any visible damage, and testing the injector's electrical connections.

What are the repair options for the OBDII code P124E in a 2018 Chevrolet Silverado?

The repair options for the OBDII code P124E in a 2018 Chevrolet Silverado may include repairing any damaged wiring, replacing the injector if necessary, and clearing the trouble code with a scan tool.

Can I drive my 2018 Chevrolet Silverado with the OBDII code P124E?

It is not recommended to drive your 2018 Chevrolet Silverado with the OBDII code P124E present, as it can lead to further damage and poor engine performance. It is best to address the issue promptly.

How much does it cost to fix the OBDII code P124E in a 2018 Chevrolet Silverado?

The cost to fix the OBDII code P124E in a 2018 Chevrolet Silverado can vary depending on the extent of the damage and the specific repairs needed. It is advisable to consult a mechanic for an accurate estimate.

Can a DIY enthusiast fix the OBDII code P124E in a 2018 Chevrolet Silverado?

While some DIY enthusiasts may be able to address the OBDII code P124E in a 2018 Chevrolet Silverado by following repair guides, it is recommended to have the issue diagnosed and repaired by a professional mechanic for optimal results.

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