P124F 2016 GMC Sierra Code - Cylinder 8 Injector High Control Circuit Shorted to Control Circuit
Quick Answer
The diagnostic trouble code P124F for a 2016 GMC Sierra indicates that there is a problem with the Cylinder 8 Injector High Control Circuit being shorted to the Control Circuit. Common causes include Damaged wiring in the injector control circuit, Faulty fuel injector for cylinder 8, Malfunctioning 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
- P124F 2016 GMC Sierra indicates Cylinder 8 Injector High Control Circuit Shorted to Control Circuit.
- Common causes
- Common causes include Damaged wiring in the injector control circuit, Faulty fuel injector for cylinder 8, Malfunctioning 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 P124F 2016 GMC Sierra Description
The diagnostic trouble code P124F for a 2016 GMC Sierra indicates that there is a problem with the Cylinder 8 Injector High Control Circuit being shorted to the Control Circuit. This means that there is an electrical issue in the circuit that controls the fuel injector for cylinder 8. The fuel injector is responsible for delivering the precise amount of fuel into the combustion chamber for ignition. When this circuit is shorted, it can lead to improper fuel delivery, which can affect the engine's performance and efficiency.
Common Causes of P124F 2016 GMC Sierra
- Damaged wiring in the injector control circuit
- Faulty fuel injector for cylinder 8
- Malfunctioning engine control module (ECM)
- Poor electrical connection in the circuit
- Corrosion or contamination in the circuit
Symptoms of P124F 2016 GMC Sierra
- Engine misfires or runs rough
- Reduced engine power
- Poor fuel economy
- Engine stalling or difficulty starting
How to Fix P124F 2016 GMC Sierra
- Perform a visual inspection of the wiring harness and connectors for any damage or corrosion.
- Test the fuel injector for cylinder 8 to determine if it is functioning properly.
- Use a multimeter to check the continuity and resistance of the injector control circuit.
- Inspect the engine control module (ECM) for any signs of damage or malfunction.
- Repair or replace any damaged components, such as wiring, connectors, the fuel injector, or the ECM, as needed.
Cost to Fix P124F 2016 GMC Sierra
The typical repair costs for addressing a P124F code on a 2016 GMC Sierra can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts such as a new fuel injector, wiring harness, or ECM can range from $200 to $800. Labor costs at auto repair shops typically range from $80 to $150 per hour. Therefore, the total repair cost for this issue could range from $300 to $1500 or more, depending on the severity of the problem and the rates charged by the repair facility. It is advisable to obtain quotes from multiple shops to compare prices and ensure a fair and accurate estimate.
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Frequently Asked Questions about P124F 2016 GMC Sierra Code
What does the OBDII code P124F mean on a 2016 GMC Sierra?
P124F indicates that the Cylinder 8 injector high control circuit is shorted to the control circuit, which disrupts proper fuel delivery to that cylinder.
What are the common symptoms of code P124F on a 2016 GMC Sierra?
Symptoms may include rough idling, engine misfires, reduced power, poor fuel economy, and the Check Engine Light turning on.
What causes the P124F code to appear on a 2016 GMC Sierra?
Common causes include damaged or shorted wiring in the injector circuit, a faulty fuel injector, a malfunctioning powertrain control module (PCM), or poor electrical connections.
How can I diagnose the P124F code on my 2016 GMC Sierra?
Start by inspecting the wiring and connectors for Cylinder 8's fuel injector. Use a multimeter to test for shorts or continuity issues, and verify the injector's functionality.
Can I drive my 2016 GMC Sierra with the P124F code?
Driving with this code is not recommended, as it can lead to engine misfires, increased fuel consumption, and potential damage to other engine components.
How do I fix the P124F code on a 2016 GMC Sierra?
Repairs may include replacing damaged wiring, repairing poor electrical connections, replacing the faulty fuel injector, or reprogramming/updating the PCM if needed.
How much does it cost to fix the P124F code on a 2016 GMC Sierra?
Repair costs vary, but replacing a fuel injector may cost between $200 and $400, while addressing wiring issues or PCM reprogramming may add labor costs.
Can a bad fuel injector cause the P124F code?
Yes, a faulty or shorted fuel injector in Cylinder 8 can trigger the P124F code due to abnormal electrical feedback in the circuit.
How do I prevent the P124F code from recurring?
Regular maintenance, inspecting wiring harnesses for damage, and ensuring proper connections can help prevent this code from recurring.
Will clearing the P124F code fix the problem?
Clearing the code with an OBDII scanner will reset the Check Engine Light temporarily, but the underlying issue must be resolved to prevent the code from returning.
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