P124C 2016 GMC Sierra Code - Injector 5 Positive Voltage Control Circuit Shorted to Control Circuit
Quick Answer
The P124C diagnostic trouble code for a 2016 GMC Sierra indicates that there is a short in the injector 5 positive voltage control circuit to the control circuit. Common causes include Wiring issues or damaged wiring harness, Faulty injector, Corrosion or poor connections in the injector circuit. 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 2016 GMC Sierra indicates Injector 5 Positive Voltage Control Circuit Shorted to Control Circuit.
- Common causes
- Common causes include Wiring issues or damaged wiring harness, Faulty injector, Corrosion or poor connections in the injector circuit.
- 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.
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Code P124C 2016 GMC Sierra Description
The P124C diagnostic trouble code for a 2016 GMC Sierra indicates that there is a short in the injector 5 positive voltage control circuit to the control circuit. This means that there is an electrical issue with the injector system, specifically with injector 5, which is responsible for delivering fuel to the engine for combustion. A short circuit can disrupt the proper flow of electrical current to the injector, affecting its performance and potentially causing misfires, rough idling, and decreased fuel efficiency.
Common Causes of P124C 2016 GMC Sierra
- Wiring issues or damaged wiring harness
- Faulty injector
- Corrosion or poor connections in the injector circuit
- Issues with the Engine Control Module (ECM)
- Electrical short circuit
Symptoms of P124C 2016 GMC Sierra
- Engine misfires
- Rough idling
- Decreased fuel efficiency
- Check engine light illuminated
- Engine stalling
How to Fix P124C 2016 GMC Sierra
- Diagnose the issue with a scan tool to confirm the specific cause of the code.
- Inspect the wiring harness and connections for any damage or corrosion.
- Test the injector for proper function and replace if necessary.
- Repair any wiring issues or replace damaged components.
- Clear the trouble code and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P124C 2016 GMC Sierra
The typical repair costs for addressing a P124C code in a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost for parts such as a new injector or wiring harness can range from $150 to $500. Labor costs can vary between $100 to $300, depending on the shop's hourly rates and the complexity of the repair. It is recommended to consult with a professional mechanic to get an accurate estimate for the repair.
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Frequently Asked Questions about P124C 2016 GMC Sierra Code
1. What does OBDII code P124C mean for a 2016 GMC Sierra?
P124C indicates that the Injector 5 Positive Voltage Control Circuit is shorted to the control circuit, which disrupts proper fuel delivery.
2. What are the common symptoms of code P124C?
Symptoms may include rough idle, engine misfire, reduced fuel efficiency, poor acceleration, and possibly an illuminated check engine light.
3. What causes code P124C to appear?
Common causes include damaged wiring, a short circuit in the injector 5 wiring harness, a faulty injector, or a malfunctioning engine control module (ECM).
4. How do I diagnose P124C on my 2016 GMC Sierra?
Start by inspecting the wiring and connectors for injector 5 for damage or corrosion. Use a multimeter to check for continuity and shorts in the circuit. If no wiring issues are found, test the injector and ECM.
5. Can a bad injector cause code P124C?
Yes, a faulty injector can cause this code if it creates a short in the circuit or fails to operate correctly.
6. Is code P124C serious, and can I drive with it?
While the vehicle may still be drivable, this code can lead to misfires and poor performance, which could cause further engine damage over time. It’s best to address the issue promptly.
7. How much does it cost to fix code P124C on a GMC Sierra?
Repair costs can vary, ranging from $100 to $500 or more, depending on whether the issue is with wiring, the injector, or the ECM.
8. Can I fix code P124C myself?
If you’re comfortable working with automotive wiring and have the proper tools, you can inspect and repair damaged wires or connectors. Injector replacement may require advanced skills and tools.
9. Does clearing the P124C code solve the problem?
Clearing the code will reset the check engine light temporarily, but the issue will persist unless the root cause is repaired.
10. What tools are needed to troubleshoot code P124C?
You’ll need an OBDII scanner, a multimeter for electrical testing, and possibly wiring diagrams for the injector circuit.
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