AutoCodesChevrolet – P124F 2017 Chevrolet Silverado

P124F 2017 Chevrolet Silverado Code - Cylinder 8 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 8, Fuel Injector 8 harness is open or shorted, Fuel Injector 8 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
P124F 2017 Chevrolet Silverado indicates Cylinder 8 Injector High Control Circuit Shorted to Control Circuit.
Common causes
Common causes include Faulty Fuel Injector 8, Fuel Injector 8 harness is open or shorted, Fuel Injector 8 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 436
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 12, 2022
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Code P124F 2017 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 P124F 2017 Chevrolet Silverado - Cylinder 8 Injector High Control Circuit Shorted to Control Circuit - AutoCodes.com
P124F 2017 Chevrolet Silverado Code - Cylinder 8 Injector High Control Circuit Shorted to Control Circuit

What are the Possible Causes of the DTC P124F 2017 Chevrolet Silverado?

  • Faulty Fuel Injector 8
  • Fuel Injector 8 harness is open or shorted
  • Fuel Injector 8 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P124F 2017 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 P124F 2017 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 P124F 2017 Chevrolet Silverado code?

Need more information on how to fix the P124F 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P124F 2017 Chevrolet Silverado Code

1. What does OBDII code P124F mean for a 2017 Chevrolet Silverado?

P124F indicates that the Cylinder 8 Injector High Control Circuit is shorted to the control circuit, meaning there’s an electrical issue affecting the injector's operation.

2. What are the common symptoms of code P124F in a 2017 Chevrolet Silverado?

Common symptoms include rough idling, misfires, reduced engine performance, poor fuel economy, and an illuminated check engine light.

3. What causes code P124F in a 2017 Chevrolet Silverado?

The most common causes are damaged wiring, a faulty fuel injector, a defective injector driver, or corrosion in the electrical connectors.

4. Can I drive my 2017 Chevrolet Silverado with code P124F?

Driving with this code is not recommended as it can lead to further engine damage, reduced performance, and poor fuel efficiency.

5. How do I diagnose code P124F in a 2017 Chevrolet Silverado?

Start by inspecting the wiring and connectors for Cylinder 8 injector, checking for shorts, corrosion, or damage. Use a multimeter to test circuit continuity and the injector's resistance.

6. How do I fix code P124F in a 2017 Chevrolet Silverado?

Repairs may include replacing damaged wiring, cleaning or replacing corroded connectors, or replacing the Cylinder 8 fuel injector if it's determined to be faulty.

7. How much does it cost to fix code P124F in a 2017 Chevrolet Silverado?

Repair costs vary, but replacing a fuel injector can range from $150 to $400, while fixing wiring or connectors may cost less depending on the extent of the damage.

8. Can a bad ECM cause code P124F in a 2017 Chevrolet Silverado?

While rare, a faulty Engine Control Module (ECM) could cause this code if it’s failing to properly control the injector circuit.

9. How can I prevent code P124F in my 2017 Chevrolet Silverado?

Regularly inspect and maintain the injector wiring and connectors, address corrosion issues promptly, and use high-quality fuel to prevent injector clogging or damage.

10. Will clearing the code P124F solve the issue in a 2017 Chevrolet Silverado?

Simply clearing the code will not fix the underlying problem. The root cause, such as a wiring issue or faulty injector, must be addressed to resolve the code permanently.

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