AutoCodes – Chevrolet – P2151 2017 Chevrolet Silverado

P2151 2017 Chevrolet Silverado Code - Cylinder 2 Injector High Control Circuit High 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 2, Fuel Injector 2 harness is open or shorted, Fuel Injector 2 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: P2151 2017 Chevrolet Silverado indicates Cylinder 2 Injector High Control Circuit High Voltage.
Common causes: Common causes include Faulty Fuel Injector 2, Fuel Injector 2 harness is open or shorted, Fuel Injector 2 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 212

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 P2151 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 voltage for greater than 2 s.

OBDII Code P2151 2017 Chevrolet Silverado - Cylinder 2 Injector High Control Circuit High Voltage - AutoCodes.com — P2151 2017 Chevrolet Silverado Code - Cylinder 2 Injector High Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2151 2017 Chevrolet Silverado?

Faulty Fuel Injector 2
Fuel Injector 2 harness is open or shorted
Fuel Injector 2 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2151 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 P2151 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 P2151 2017 Chevrolet Silverado code?

Need more information on how to fix the P2151 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 P2151 2017 Chevrolet Silverado Code

1. What does the OBDII code P2151 mean on a 2017 Chevrolet Silverado?

P2151 indicates that the Cylinder 2 Injector High Control Circuit is experiencing a high voltage issue, suggesting an electrical fault in the injector circuit.

2. What are the common symptoms of code P2151 on a 2017 Chevrolet Silverado?

Symptoms include rough idling, misfires, reduced engine performance, poor fuel economy, and potential difficulty starting the vehicle.

3. What causes the P2151 code to trigger in a 2017 Chevrolet Silverado?

Common causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a failing powertrain control module (PCM), or corrosion in the electrical system.

4. How do I diagnose the P2151 code on my 2017 Chevrolet Silverado?

Start by inspecting the wiring and connectors for damage or corrosion near Cylinder 2. Use a multimeter to check for voltage irregularities, and test the fuel injector for proper functionality.

5. Can a bad fuel injector cause the P2151 code on a 2017 Chevrolet Silverado?

Yes, a faulty or shorted fuel injector can cause high voltage in the control circuit, triggering the P2151 code.

6. Is it safe to drive a 2017 Chevrolet Silverado with the P2151 code?

Driving with this code is not recommended, as it can lead to poor performance, increased emissions, and potential engine damage if not addressed promptly.

7. How do I fix the P2151 code on a 2017 Chevrolet Silverado?

Repairs may include replacing the faulty fuel injector, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the PCM if necessary.

8. Could a PCM failure cause the P2151 code on my 2017 Chevrolet Silverado?

Yes, a malfunctioning PCM can misinterpret voltage signals or fail to control the injector circuit properly, leading to the P2151 code.

9. What tools are needed to troubleshoot the P2151 code on a 2017 Chevrolet Silverado?

Youâ€™ll need an OBDII scanner, a multimeter to test electrical components, and possibly a wiring diagram for the fuel injector circuit.

10. How much does it cost to repair the P2151 code on a 2017 Chevrolet Silverado?

The repair cost varies depending on the issue. Replacing a fuel injector typically costs $200â€“$500, while wiring repairs or PCM replacement can range from $100 to $1,000.