AutoCodes – Chevrolet – P2147 2017 Chevrolet Silverado

P2147 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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.

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Code Popularity 322

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 08, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2147 2017 Chevrolet Silverado Description

The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. The ECM energizes each fuel injector by grounding the low control circuit of the fuel injector. The ECM monitors the status of the fuel injector circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the fuel injector high voltage supply circuit is shorted to ground for greater than 2 s.

OBDII Code P2147 2017 Chevrolet Silverado - Cylinder 1 Injector High Control Circuit Low Voltage - AutoCodes.com — P2147 2017 Chevrolet Silverado Code - Cylinder 1 Injector High Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2147 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado code?

Need more information on how to fix the P2147 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2147 2017 Chevrolet Silverado Code

1. What does the OBDII code P2147 mean on a 2017 Chevrolet Silverado?

P2147 indicates a problem with the Cylinder 1 Injector High Control Circuit, specifically low voltage, which means the injector is not receiving the correct electrical signal.

2. What are the common symptoms of a P2147 code?

Symptoms include poor engine performance, rough idling, misfires, reduced fuel efficiency, hesitation or stalling, and the check engine light illuminated.

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 in the PCM, or corrosion in the electrical connections.

4. Can I drive my 2017 Chevrolet Silverado with a P2147 code?

While the truck may still run, driving with this code can lead to further damage, reduced performance, and potential safety concerns. It's best to address the issue promptly.

5. How do you diagnose a P2147 code?

Diagnosis involves inspecting the injector wiring and connectors, testing the fuel injector's resistance, checking for voltage at the injector connector, and possibly testing the PCM output.

6. How can I fix the P2147 error code?

Repairs may include replacing the faulty injector, repairing or replacing damaged wiring or connectors, or addressing issues with the PCM if necessary.

7. Is the P2147 code specific to Cylinder 1?

Yes, this code specifically refers to the high control circuit for Cylinder 1's fuel injector.

8. How much does it cost to repair a P2147 code on a Silverado?

Repair costs vary but can range from $200 to $600+ depending on whether the fuel injector, wiring, or PCM needs replacement.

9. Can a dirty fuel injector cause the P2147 code?

A dirty injector typically causes performance issues but is unlikely to trigger a P2147 code, which usually points to electrical or circuit-related problems.

10. Will clearing the code fix the P2147 issue?

Clearing the code may turn off the check engine light temporarily, but the underlying issue must be resolved to prevent the code from returning.