P2147 2014 GMC Sierra 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 2014 GMC Sierra 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 2014 GMC Sierra Description
What are the Possible Causes of the DTC P2147 2014 GMC Sierra?
- 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 2014 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 P2147 2014 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.
Need more information about the P2147 2014 GMC Sierra code?
Need more information on how to fix the P2147 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2147 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2147 2014 GMC Sierra Code
1. What does the OBDII code P2147 mean on a 2014 GMC Sierra?
P2147 indicates a problem with the Cylinder 1 Injector High Control Circuit, specifically a low voltage issue.
2. What are the common symptoms of P2147 in a 2014 GMC Sierra?
Symptoms may include engine misfires, rough idling, reduced power, poor fuel economy, and an illuminated check engine light.
3. What causes the P2147 code to appear?
Common causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a failed injector driver module, or a bad ECM.
4. Can I drive my 2014 GMC Sierra with the P2147 code?
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 the P2147 code?
Start by checking the wiring and connectors for damage or corrosion, testing the fuel injector, and inspecting the injector driver module for proper operation.
6. What tools are needed to troubleshoot P2147?
You’ll need an OBDII scanner, a multimeter to check voltage and continuity, and possibly a noid light for injector testing.
7. How is the P2147 code typically fixed?
Repairs may include replacing the faulty injector, repairing or replacing damaged wiring, addressing issues with the injector driver module, or reprogramming/replacing the ECM if necessary.
8. How much does it cost to fix the P2147 code on a 2014 GMC Sierra?
Costs can vary, but replacing a fuel injector typically ranges from $200 to $600, while wiring repairs or ECM replacement could increase the total.
9. Can a dirty fuel injector cause the P2147 code?
No, this code specifically refers to an electrical issue in the injector circuit, not a clog or mechanical failure.
10. Will clearing the P2147 code with a scanner fix the problem?
Clearing the code may temporarily turn off the check engine light, but it won’t resolve the underlying issue causing the code.
Discuss the causes and fixes for P2147 2014 GMC Sierra OBDII Code
Code P2147 2014 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
