P124E 2018 GMC Sierra Code - Cylinder 7 Injector High Control Circuit Shorted to Control Circuit
Quick Answer
The diagnostic trouble code P124E for a 2018 GMC Sierra indicates that there is a problem with the Cylinder 7 Injector High Control Circuit being shorted to the Control Circuit. Common causes include Faulty fuel injector, Damaged wiring or connectors in the control circuit, 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
- P124E 2018 GMC Sierra indicates Cylinder 7 Injector High Control Circuit Shorted to Control Circuit.
- Common causes
- Common causes include Faulty fuel injector, Damaged wiring or connectors in the control circuit, 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 P124E 2018 GMC Sierra Description
The diagnostic trouble code P124E for a 2018 GMC Sierra indicates that there is a problem with the Cylinder 7 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 7. The fuel injector is responsible for delivering the precise amount of fuel into the combustion chamber for ignition. When the control circuit is shorted, it can lead to improper fuel delivery, which can affect the engine's performance.
Common Causes of P124E 2018 GMC Sierra
- Faulty fuel injector
- Damaged wiring or connectors in the control circuit
- Malfunctioning Engine Control Module (ECM)
- Short circuit in the wiring harness
Symptoms of P124E 2018 GMC Sierra
- Rough idling
- Engine misfires
- Decreased fuel efficiency
- Loss of power
- Engine stalling
How to Fix P124E 2018 GMC Sierra
- Begin by conducting a thorough inspection of the wiring, connectors, and fuel injector for any visible damage.
- Use a multimeter to test the continuity and resistance of the control circuit to identify any short circuits.
- Test the fuel injector for proper operation and replace if necessary.
- Check the ECM for any fault codes and reprogram or replace as needed.
- Clear the diagnostic trouble codes, perform a test drive, and recheck for any recurring issues.
Cost to Fix P124E 2018 GMC Sierra
The typical repair costs for addressing a Cylinder 7 Injector High Control Circuit Shorted to Control Circuit issue can range from $200 to $500, depending on the specific cause of the problem and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
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Frequently Asked Questions about P124E 2018 GMC Sierra Code
1. What does OBDII code P124E mean for a 2018 GMC Sierra?
P124E indicates that the Cylinder 7 Injector High Control Circuit has a short to control circuit, meaning there's an electrical issue affecting the injector's performance.
2. What are the common symptoms of code P124E?
Symptoms may include rough idling, misfiring, reduced engine performance, poor fuel economy, and the check engine light illuminating.
3. What causes code P124E to appear?
Common causes include damaged or frayed wiring, a faulty injector, a shorted control circuit, or a malfunctioning engine control module (ECM).
4. Can I drive my 2018 GMC Sierra with code P124E?
Driving with this code is not recommended, as it can lead to further engine damage, reduced performance, and unsafe driving conditions.
5. How do I diagnose P124E in my GMC Sierra?
Diagnosis involves visually inspecting the wiring and connectors for damage, testing the cylinder 7 fuel injector, and using a multimeter to check the circuit for shorts or continuity issues.
6. What tools are needed to fix P124E?
You may need an OBDII scanner, a multimeter, wiring repair tools, and a replacement fuel injector if it's faulty.
7. How much does it cost to repair code P124E?
Repair costs can vary, but replacing an injector typically costs $300-$500, while wiring repairs or ECM replacements may be more expensive.
8. Can a faulty ECM cause code P124E?
Yes, a malfunctioning ECM may fail to properly control the injector circuit, leading to this code.
9. What should I check first when troubleshooting P124E?
Start by inspecting the wiring and connectors around the cylinder 7 fuel injector for damage or corrosion.
10. Will clearing the code fix the problem?
No, clearing the code without addressing the root cause will likely result in the code returning and continued performance issues.
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