P2147 2015 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 2015 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 2015 GMC Sierra Description
What are the Possible Causes of the DTC P2147 2015 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 2015 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 2015 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 P2147 2015 GMC Sierra Code
1. What does the OBDII code P2147 mean on a 2015 GMC Sierra?
P2147 indicates a problem with the Cylinder 1 Injector High Control Circuit, specifically a low voltage condition.
2. What are the common symptoms of code P2147 in a 2015 GMC Sierra?
Symptoms may include rough idling, misfires, reduced engine performance, poor fuel economy, or the engine failing to start.
3. What causes the P2147 code on a GMC Sierra?
Common causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning fuel injector driver module, or a failing ECM.
4. Can I drive my 2015 GMC Sierra with the P2147 code?
Driving with this code is not recommended, as it can lead to further engine damage and reduced performance.
5. How do I diagnose the P2147 code on my GMC Sierra?
Diagnose the issue by visually inspecting the injector wiring and connectors, testing the fuel injector for proper resistance, and checking the voltage supplied to the circuit.
6. How can a faulty fuel injector cause the P2147 code?
A faulty injector can disrupt the electrical circuit, causing low voltage signals that trigger the code.
7. What tools are needed to fix the P2147 code?
You’ll need an OBDII scanner, a multimeter for testing voltage and resistance, and possibly replacement parts like wiring or the injector.
8. How much does it cost to repair the P2147 code on a 2015 GMC Sierra?
Repair costs vary based on the issue, ranging from $150–$400 for injector replacement, and potentially more if wiring or module replacement is required.
9. Can I clear the P2147 code without fixing the problem?
The code can be cleared with an OBDII scanner, but it will likely return unless the underlying issue is resolved.
10. Is the ECM a common cause of the P2147 code?
While less common, a faulty ECM can cause this code if it fails to properly control the injector circuit.
Discuss the causes and fixes for P2147 2015 GMC Sierra OBDII Code
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