AutoCodes – GMC – P216B 2015 GMC Sierra

P216B 2015 GMC Sierra Code - Cylinder 5 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 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 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: P216B 2015 GMC Sierra indicates Cylinder 5 Injector High Control Circuit Low Voltage.
Common causes: Common causes include Faulty Fuel Injector 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 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 294

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

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 P216B 2015 GMC Sierra 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 P216B 2015 GMC Sierra - Cylinder 5 Injector High Control Circuit Low Voltage - AutoCodes.com — P216B 2015 GMC Sierra Code - Cylinder 5 Injector High Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P216B 2015 GMC Sierra?

Faulty Fuel Injector 5
Fuel Injector 5 harness is open or shorted
Fuel Injector 5 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P216B 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 P216B 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.

Need more information about the P216B 2015 GMC Sierra 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 P216B 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P216B in a 2015 GMC Sierra related to the Cylinder 5 Injector High Control Circuit Low Voltage?

- Common symptoms include rough idling, engine misfires, loss of power, and potential stalling of the vehicle.

2. What are the possible causes of the Cylinder 5 Injector High Control Circuit Low Voltage error code on a 2015 GMC Sierra?

- Possible causes include a faulty fuel injector, wiring issues in the injector circuit, a poor electrical connection, or a problem with the Engine Control Module (ECM).

3. How can I diagnose the Cylinder 5 Injector High Control Circuit Low Voltage issue on my 2015 GMC Sierra?

- Diagnosis can involve using a scan tool to retrieve the specific trouble code, checking the wiring and connectors related to the cylinder 5 injector, and performing a thorough inspection of the injector itself.

4. Can a DIY enthusiast repair the Cylinder 5 Injector High Control Circuit Low Voltage problem on a 2015 GMC Sierra?

- While some basic troubleshooting steps can be taken, repairing this issue often requires advanced diagnostic tools and expertise, making it advisable to seek professional help.

5. Are there any quick tips for fixing the Cylinder 5 Injector High Control Circuit Low Voltage fault code?

- Quick tips include checking for loose or damaged wiring, ensuring proper connection to the injector, and performing a reset of the ECM after addressing any potential issues.

6. Is it safe to continue driving my 2015 GMC Sierra with the P216B code indicating Cylinder 5 Injector High Control Circuit Low Voltage?

- It is not recommended to drive the vehicle with this fault code present, as it can lead to further damage to the engine or emission system if left unresolved.

7. How much does it typically cost to repair the Cylinder 5 Injector High Control Circuit Low Voltage issue on a 2015 GMC Sierra?

- Repair costs can vary depending on the exact cause of the problem, but they may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can a faulty Cylinder 5 Injector High Control Circuit Low Voltage code impact the fuel efficiency of a 2015 GMC Sierra?

- Yes, a malfunctioning injector can affect fuel delivery to the cylinder, leading to decreased fuel efficiency and potentially higher fuel consumption.

9. What are the long-term effects of ignoring the Cylinder 5 Injector High Control Circuit Low Voltage code on a 2015 GMC Sierra?

- Ignoring this code can result in poor engine performance, increased emissions, potential damage to the catalytic converter, and even engine failure if not addressed promptly.

10. How often should I check for the Cylinder 5 Injector High Control Circuit Low Voltage issue in my 2015 GMC Sierra?

- It is advisable to address any warning lights or symptoms immediately and perform regular vehicle maintenance checks to prevent the occurrence of such issues.