P2147 GMC Code - Cylinder 1 Injector High Control Circuit Low Voltage
Quick Answer
The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. Common causes include Faulty Fuel Injector 1, Fuel Injector 1 harness is open or shorted, Fuel Injector 1 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
- P2147 GMC indicates Cylinder 1 Injector High Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty Fuel Injector 1, Fuel Injector 1 harness is open or shorted, Fuel Injector 1 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 P2147 GMC Description
What are the Possible Causes of the DTC P2147 GMC?
- Faulty Fuel Injector 1
- Fuel Injector 1 harness is open or shorted
- Fuel Injector 1 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P2147 GMC?
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 P2147 GMC 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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Information for Specific GMC Models
- P2147 2014 GMC Sierra — Cylinder 1 Injector High Control Circuit Low Voltage
- P2147 2015 GMC Sierra — Cylinder 1 Injector High Control Circuit Low Voltage
- P2147 2016 GMC Sierra — Cylinder 1 Injector High Control Circuit Low Voltage
- P2147 2017 GMC Sierra — Cylinder 1 Injector High Control Circuit Low Voltage
- P2147 2018 GMC Sierra — Cylinder 1 Injector High Control Circuit Low Voltage
Frequently Asked Questions about P2147 GMC Code
1. What are the common symptoms of OBDII code P2147 GMC (Cylinder 1 Injector High Control Circuit Low Voltage)?
The common symptoms of this code may include rough idling, decreased engine performance, misfiring, and illuminated Check Engine Light.
2. What are the possible causes of OBDII code P2147 GMC?
Possible causes of this code include a faulty fuel injector, damaged wiring or connector related to the fuel injector, issues with the fuel injector driver module, or a problem with the PCM (Powertrain Control Module).
3. How can I diagnose the issue causing OBDII code P2147 GMC?
Diagnosing the issue may involve using a scan tool to check for the specific code, inspecting the wiring and connectors related to the fuel injector, testing the fuel injector's resistance, and checking the fuel injector driver module and PCM for any faults.
4. Can I still drive my vehicle with OBDII code P2147 GMC present?
It is not recommended to drive your vehicle with this code present, as it can lead to further damage to the engine and affect overall performance. It is best to address the issue promptly.
5. How can I repair OBDII code P2147 GMC myself?
Repairing this code may involve replacing the faulty fuel injector, repairing or replacing damaged wiring or connectors, or addressing any issues with the fuel injector driver module or PCM. It is recommended to have the necessary knowledge and tools before attempting the repair.
6. Is it necessary to reset the fault codes after repairing OBDII code P2147 GMC?
Yes, it is important to reset the fault codes using a scan tool after repairing the issue causing OBDII code P2147 GMC. This will clear the code and turn off the Check Engine Light.
7. What are the potential risks of ignoring OBDII code P2147 GMC?
Ignoring this code can lead to poor engine performance, decreased fuel efficiency, potential damage to the engine, and may result in more costly repairs in the long run.
8. Can a dirty fuel injector cause OBDII code P2147 GMC?
Yes, a dirty or clogged fuel injector can potentially cause this code to trigger. Regular maintenance, such as fuel injector cleaning, can help prevent issues related to fuel injectors.
9. How long does it typically take to repair OBDII code P2147 GMC?
The repair time for this code can vary depending on the exact cause of the issue and the level of expertise of the person performing the repair. It may take anywhere from a few hours to a full day to complete the repair.
10. Will OBDII code P2147 GMC cause permanent damage to my engine if left unresolved?
If left unresolved for an extended period, OBDII code P2147 GMC can potentially cause permanent damage to the engine, especially if it leads to misfiring or poor fuel delivery. It is important to address the issue promptly to prevent further damage.
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