P124C 2014 GMC Sierra Code - Injector 5 Positive Voltage 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 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 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
- P124C 2014 GMC Sierra indicates Injector 5 Positive Voltage Control Circuit Shorted to Control Circuit.
- Common causes
- Common causes include Faulty Fuel Injector 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 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 P124C 2014 GMC Sierra Description
What are the Possible Causes of the DTC P124C 2014 GMC Sierra?
- Faulty Fuel Injector 5
- Fuel Injector 5 harness is open or shorted
- Fuel Injector 5 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P124C 2014 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 P124C 2014 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 P124C 2014 GMC Sierra Code
1. What does the OBDII code P124C mean on a 2014 GMC Sierra?
P124C indicates an issue with the Injector 5 Positive Voltage Control Circuit being shorted to the control circuit, which affects the operation of injector 5.
2. What are the common symptoms of the P124C code?
Symptoms may include rough idling, misfires, reduced engine performance, poor fuel economy, and the check engine light being illuminated.
3. What causes the P124C code to appear?
Common causes include damaged wiring or connectors for injector 5, a failed fuel injector, a short circuit in the injector wiring harness, or a faulty engine control module (ECM).
4. Can I drive my 2014 GMC Sierra with a P124C code?
Driving with a P124C code is not recommended, as it can lead to further engine damage, reduced performance, and potential safety issues.
5. How do I diagnose the P124C code on my 2014 GMC Sierra?
Start by inspecting the wiring and connectors for injector 5 for damage or corrosion. Then, use a multimeter to check for continuity and shorts in the circuit, and test the injector itself for proper operation.
6. How is the P124C code typically repaired?
Repairs may include replacing damaged wiring or connectors, replacing the injector, or repairing the short circuit. In some cases, the ECM may need reprogramming or replacement.
7. How much does it cost to fix the P124C code?
The repair cost can vary depending on the root cause. Replacing an injector typically costs $300-$700, while wiring repairs might cost $100-$300. ECM replacement or reprogramming could exceed $1,000.
8. Can a faulty injector cause the P124C code?
Yes, a faulty injector can cause a short in the circuit, triggering the P124C code.
9. Will clearing the code with a scan tool fix the issue?
Clearing the code will turn off the check engine light temporarily, but the underlying issue must be repaired to prevent the code from returning.
10. What tools are needed to troubleshoot the P124C code?
You’ll need an OBDII scanner, a multimeter, and possibly wiring diagrams for your 2014 GMC Sierra to properly diagnose the issue.
Discuss the causes and fixes for P124C 2014 GMC Sierra OBDII Code
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