P124F 2017 GMC Sierra 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 GMC Sierra 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.
Code P124F 2017 GMC Sierra Description
What are the Possible Causes of the DTC P124F 2017 GMC Sierra?
- 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 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 P124F 2017 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 P124F 2017 GMC Sierra Code
What does the OBDII code P124F mean for a 2017 GMC Sierra?
Code P124F indicates a problem with the Cylinder 8 injector high control circuit, specifically that it is shorted to the control circuit.
What are the symptoms of P124F in a 2017 GMC Sierra?
Symptoms may include rough idling, misfires, reduced engine performance, poor fuel efficiency, or a lit check engine light.
What causes the P124F code to appear?
Common causes include damaged wiring, a shorted or faulty injector, a defective ECM, or corrosion on the injector circuit connectors.
Can I drive my 2017 GMC Sierra with the P124F code?
Driving with this code is not recommended as it can cause further engine damage, misfires, or unsafe driving conditions.
How do I diagnose the P124F code?
Diagnosis involves inspecting the cylinder 8 injector wiring and connectors, testing the injector for shorts, and using a multimeter to check for proper voltage in the control circuit.
How can I fix the P124F code?
Repairs may include replacing the cylinder 8 fuel injector, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the ECM if necessary.
Does the P124F code mean the cylinder 8 injector is bad?
Not necessarily. While a faulty injector is a common cause, the issue could also stem from wiring problems or a malfunctioning ECM.
How much does it cost to fix the P124F code on a 2017 GMC Sierra?
Costs vary depending on the exact issue, but replacing a fuel injector typically ranges from $200 to $500, while wiring repairs may be less expensive.
Can a weak battery cause the P124F code?
While unlikely, a weak battery or charging system issue could potentially contribute to voltage irregularities in the injector circuit.
Will clearing the P124F code with a scan tool fix the problem?
Clearing the code will turn off the check engine light temporarily, but it won’t fix the underlying issue causing the code.
Discuss the causes and fixes for P124F 2017 GMC Sierra OBDII Code
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