P124D 2016 GMC Sierra Code - Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit
Quick Answer
The P124D code for a 2016 GMC Sierra indicates a problem with the Injector 6 Positive Voltage Control Circuit being shorted to the Control Circuit. Common causes include Wiring harness issues such as frayed or damaged wires, Faulty fuel injector for cylinder 6, Problems with the engine control module (ECM). 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
- P124D 2016 GMC Sierra indicates Injector 6 Positive Voltage Control Circuit Shorted to Control Circuit.
- Common causes
- Common causes include Wiring harness issues such as frayed or damaged wires, Faulty fuel injector for cylinder 6, Problems with the engine control module (ECM).
- 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 P124D 2016 GMC Sierra Description
The P124D code for a 2016 GMC Sierra indicates a problem with the Injector 6 Positive Voltage Control Circuit being shorted to the Control Circuit. This means that there is an issue with the electrical circuit that controls the fuel injector for cylinder 6 in the engine. The fuel injector is responsible for delivering the precise amount of fuel into the combustion chamber at the right time. When this circuit is shorted, it can lead to improper fuel delivery, affecting the engine's performance and efficiency.
Common Causes of P124D 2016 GMC Sierra
- Wiring harness issues such as frayed or damaged wires
- Faulty fuel injector for cylinder 6
- Problems with the engine control module (ECM)
- Corrosion or poor connections in the electrical system
- Short circuits or electrical faults in the control circuit
Symptoms of P124D 2016 GMC Sierra
- Rough idling or engine misfires
- Loss of power or acceleration
- Decreased fuel efficiency
- Check Engine Light illuminated
- Engine stalling or hesitation
How to Fix P124D 2016 GMC Sierra
- Begin by diagnosing the exact cause of the issue using a diagnostic scanner to pinpoint the source of the short circuit.
- Inspect the wiring harness and connections for any signs of damage or corrosion. Repair or replace any damaged wires as needed.
- Test the fuel injector for cylinder 6 to determine if it is functioning properly. Replace the injector if it is faulty.
- Check the engine control module (ECM) for any issues and reprogram or replace it if necessary.
- Clear the error code from the vehicle's ECM and test the vehicle to ensure that the issue has been resolved.
Cost to Fix P124D 2016 GMC Sierra
The cost of repairing a P124D code on a 2016 GMC Sierra can vary depending on the exact cause of the issue and the labor rates in your area. On average, you can expect to pay between $200 and $500 for parts and labor to address this issue. Keep in mind that diagnostic time and labor rates can vary, so it's best to consult with a local auto repair shop for a more accurate estimate.
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Frequently Asked Questions about P124D 2016 GMC Sierra Code
1. What does the OBDII code P124D mean on a 2016 GMC Sierra?
P124D indicates that the Injector 6 Positive Voltage Control Circuit has a short to the control circuit, which disrupts proper fuel injector operation.
2. What are the common symptoms of P124D on a 2016 GMC Sierra?
Symptoms may include rough idling, reduced engine performance, misfires, poor fuel efficiency, and an illuminated check engine light.
3. What causes the P124D code to appear?
Common causes include damaged wiring in the injector circuit, a faulty fuel injector for cylinder 6, a defective engine control module (ECM), or poor electrical connections.
4. How do I diagnose the P124D code on my GMC Sierra?
Diagnosis involves inspecting the wiring and connectors for cylinder 6, testing the injector for continuity, and using a multimeter to check for shorts or voltage irregularities in the circuit.
5. Can I continue driving with a P124D code?
Driving with this code is not recommended as it can lead to engine damage, poor performance, and increased emissions over time.
6. How is the P124D code fixed?
Repairs may include replacing damaged wiring or connectors, replacing the injector for cylinder 6, or reprogramming or replacing the ECM if necessary.
7. How much does it cost to fix the P124D code on a 2016 GMC Sierra?
Repair costs vary but typically range from $100 to $300 for wiring repairs or injector replacement. ECM replacement is more expensive, often exceeding $500.
8. Can a dirty injector cause the P124D code?
No, this code specifically relates to an electrical issue, not a mechanical or clogging problem with the injector.
9. Do I need special tools to fix the P124D code?
Yes, you may need an OBDII scanner, a multimeter for electrical testing, and possibly manufacturer-specific diagnostic tools.
10. Could a blown fuse cause the P124D code?
While unlikely, a blown fuse in the injector circuit could contribute to electrical issues and should be checked during diagnosis.
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