P124A 2016 GMC Sierra Code - Injector 3 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 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 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
- P124A 2016 GMC Sierra indicates Injector 3 Positive Voltage Control Circuit Shorted to Control Circuit.
- Common causes
- Common causes include Faulty Fuel Injector 3, Fuel Injector 3 harness is open or shorted, Fuel Injector 3 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 P124A 2016 GMC Sierra Description
What are the Possible Causes of the DTC P124A 2016 GMC Sierra?
- Faulty Fuel Injector 3
- Fuel Injector 3 harness is open or shorted
- Fuel Injector 3 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P124A 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 P124A 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 P124A 2016 GMC Sierra Code
1. What does OBDII code P124A mean on a 2016 GMC Sierra?
P124A indicates that the Injector 3 Positive Voltage Control Circuit is shorted to the control circuit, meaning there is an electrical issue affecting the fuel injector's operation.
2. What are the symptoms of code P124A in a 2016 GMC Sierra?
Symptoms may include rough idling, misfiring, reduced engine performance, poor fuel economy, and the illumination of the check engine light.
3. What causes code P124A to appear in a 2016 GMC Sierra?
Common causes include damaged or corroded wiring, a faulty injector, a short circuit in the injector control circuit, or a malfunctioning powertrain control module (PCM).
4. Can I drive my 2016 GMC Sierra with code P124A?
It is not recommended to drive with this code as it can lead to engine performance issues and potentially cause further damage if left unresolved.
5. How do I diagnose the P124A code on a 2016 GMC Sierra?
Diagnosis involves inspecting the wiring and connectors for damage, testing the fuel injector for proper operation, and using a multimeter to check for short circuits in the control circuit.
6. How do I fix code P124A in my 2016 GMC Sierra?
Repairs may include repairing or replacing damaged wiring, cleaning or replacing the affected injector, or reprogramming/replacing the PCM if necessary.
7. How much does it cost to repair code P124A on a 2016 GMC Sierra?
Repair costs vary depending on the root cause but typically range from $100 to $500, depending on whether the issue involves wiring, the injector itself, or the PCM.
8. Can a bad fuel injector cause code P124A?
Yes, a malfunctioning or shorted fuel injector can trigger this code if it disrupts the voltage control circuit.
9. Will clearing the code fix the P124A issue in my 2016 GMC Sierra?
Clearing the code may temporarily turn off the check engine light, but the issue will persist until the underlying problem is resolved.
10. Is the P124A code specific to Injector 3 on a 2016 GMC Sierra?
Yes, P124A specifically refers to an issue with the voltage control circuit for Injector 3. Other injectors would have different diagnostic codes.
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