AutoCodes – Chevrolet – P2151 2016 Chevrolet Silverado

P2151 2016 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 2016 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 327

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 2016 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 2016 Chevrolet Silverado - Cylinder 2 Injector High Control Circuit High Voltage - AutoCodes.com — P2151 2016 Chevrolet Silverado Code - Cylinder 2 Injector High Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2151 2016 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 2016 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 2016 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 2016 Chevrolet Silverado code?

Need more information on how to fix the P2151 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2151 on a 2016 Chevrolet Silverado related to the Cylinder 2 Injector High Control Circuit High Voltage?

- Common symptoms include rough idling, reduced engine performance, misfires in cylinder 2, and the illumination of the Check Engine Light.

2. What are the potential causes of OBDII code P2151 on a 2016 Chevrolet Silverado?

- The code P2151 can be triggered by issues such as a faulty fuel injector in cylinder 2, a problem with the injector control circuit, or a wiring issue.

3. How can I diagnose the Cylinder 2 Injector High Control Circuit High Voltage issue on a 2016 Chevrolet Silverado?

- Diagnosis involves using an OBDII scanner to retrieve the code, conducting a visual inspection of the injector and its wiring, and testing the injector's resistance and voltage.

4. Can a DIY enthusiast repair OBDII code P2151 on a 2016 Chevrolet Silverado?

- While some may attempt DIY repairs, it is recommended to have a qualified mechanic address this issue due to the complexity of diagnosing and fixing problems related to injector control circuits.

5. Is it safe to continue driving a 2016 Chevrolet Silverado with OBDII code P2151 present?

- It is not advisable to drive the vehicle with this code active, as it can lead to further damage to the engine and potentially worsen performance issues.

6. How much does it typically cost to repair OBDII code P2151 on a 2016 Chevrolet Silverado?

- The cost of repairing this code can vary depending on the root cause of the issue, but it may involve expenses related to parts replacement, labor, and diagnostic fees.

7. Are there any preventative measures to avoid OBDII code P2151 on a 2016 Chevrolet Silverado?

- Regular maintenance of the fuel injection system, including periodic inspections and cleaning, can help prevent issues that may trigger the Cylinder 2 Injector High Control Circuit High Voltage code.

8. Can a faulty fuel injector in cylinder 2 cause OBDII code P2151 on a 2016 Chevrolet Silverado?

- Yes, a malfunctioning fuel injector in cylinder 2 can disrupt the control circuit and voltage levels, leading to the triggering of code P2151.

9. How urgent is it to address OBDII code P2151 on a 2016 Chevrolet Silverado?

- It is recommended to address this code promptly to prevent potential engine damage and restore the vehicle's optimal performance.

10. Are there any recalls or technical service bulletins related to OBDII code P2151 on a 2016 Chevrolet Silverado?

- It is advisable to check with a Chevrolet dealership or refer to online resources to see if there are any recalls or bulletins addressing this specific OBDII code on the 2016 Silverado.