P124E 2016 GMC Sierra 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 2016 GMC Sierra 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.
Code P124E 2016 GMC Sierra Description
What are the Possible Causes of the DTC P124E 2016 GMC Sierra?
- 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 2016 GMC Sierra?
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 2016 GMC Sierra 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.
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Frequently Asked Questions about P124E 2016 GMC Sierra Code
What does the OBDII code P124E mean on a 2016 GMC Sierra?
P124E indicates that the Cylinder 7 Injector High Control Circuit is shorted to the control circuit, meaning there is an electrical issue in the injector circuit for cylinder 7.
What are the symptoms of code P124E in a 2016 GMC Sierra?
Common symptoms include engine misfire, rough idling, reduced power, poor fuel economy, and an illuminated check engine light.
What causes the P124E code to appear?
The code can be caused by a shorted injector, damaged wiring or connectors in the circuit, a faulty injector driver module, or a problem with the engine control module (ECM).
Can I continue driving my 2016 GMC Sierra with the P124E code?
Driving with this code is not recommended as it can lead to further engine damage, increased emissions, and reduced performance.
How is the P124E code diagnosed?
A technician will inspect the injector and circuit wiring for damage, test the injector resistance, and use a scan tool to monitor the injector driver signals.
What tools are needed to troubleshoot the P124E code?
You’ll need a multimeter, a scan tool with live data capabilities, and sometimes an oscilloscope for detailed signal analysis.
How can the P124E code be fixed?
Repairs may include replacing the cylinder 7 injector, repairing or replacing damaged wiring/connectors, or replacing the injector driver module or ECM if faulty.
What is the cost to fix the P124E code on a 2016 GMC Sierra?
Repair costs can vary, ranging from $200 to $800 or more, depending on whether the issue is wiring-related or requires injector/module replacement.
Can a faulty injector cause the P124E code?
Yes, a faulty injector with internal shorting can cause the high control circuit to malfunction, triggering the P124E code.
Is the P124E code specific to GMC vehicles?
While P124E is specific to GM vehicles, similar injector circuit codes may appear on other makes and models with similar issues.
Discuss the causes and fixes for P124E 2016 GMC Sierra OBDII Code
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