AutoCodes – GMC – P216F 2018 GMC Sierra

P216F 2018 GMC Sierra Code - Cylinder 6 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 6, Fuel Injector 6 harness is open or shorted, Fuel Injector 6 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: P216F 2018 GMC Sierra indicates Cylinder 6 Injector High Control Circuit High Voltage.
Common causes: Common causes include Faulty Fuel Injector 6, Fuel Injector 6 harness is open or shorted, Fuel Injector 6 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 198

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 P216F 2018 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 voltage for greater than 2 s.

OBDII Code P216F 2018 GMC Sierra - Cylinder 6 Injector High Control Circuit High Voltage - AutoCodes.com — P216F 2018 GMC Sierra Code - Cylinder 6 Injector High Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P216F 2018 GMC Sierra?

Faulty Fuel Injector 6
Fuel Injector 6 harness is open or shorted
Fuel Injector 6 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P216F 2018 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 P216F 2018 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 P216F 2018 GMC Sierra code?

Need more information on how to fix the P216F 2018 GMC Sierra 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 P216F 2018 GMC Sierra Code

What are the common symptoms of OBDII code P216F on a 2018 GMC Sierra?

Some common symptoms include rough idling, engine misfires, decreased fuel efficiency, and the illumination of the Check Engine light.

What can cause the OBDII code P216F on a 2018 GMC Sierra?

The code P216F typically indicates an issue with the high control circuit high voltage of the Cylinder 6 Injector. Possible causes include a faulty injector, wiring issues, or a problem with the Engine Control Module (ECM).

How can I diagnose the OBDII code P216F on my 2018 GMC Sierra?

A thorough diagnostic process would involve checking the wiring harness and connections related to the Cylinder 6 Injector, testing the injector itself for proper operation, and using a scan tool to analyze the ECM data for any irregularities.

What are the repair options for OBDII code P216F on a 2018 GMC Sierra?

Repair options may include replacing the faulty injector, repairing any damaged wiring, or addressing issues with the ECM. It is recommended to consult with a qualified mechanic for a proper diagnosis and repair plan.

Is it safe to continue driving my 2018 GMC Sierra with OBDII code P216F?

It is not advisable to continue driving your vehicle with the P216F code present, as it can lead to further engine damage and potentially unsafe driving conditions. It is best to address the issue promptly.

Can a DIY enthusiast fix the OBDII code P216F on a 2018 GMC Sierra?

While some DIY enthusiasts may have the skills to address simple wiring issues or replace an injector, diagnosing and repairing the specific cause of the P216F code may require specialized tools and expertise, so professional assistance is recommended.

What are some preventive measures to avoid OBDII code P216F on a 2018 GMC Sierra?

Regular maintenance, such as timely fuel injector cleaning and inspection of the wiring harness, can help prevent issues that may trigger the P216F code. Following the manufacturer's recommended maintenance schedule is also essential.

How much does it typically cost to repair OBDII code P216F on a 2018 GMC Sierra?

The cost of repairing the P216F code can vary depending on the specific cause of the issue, the labor rates in your area, and the cost of any parts that need to be replaced. It is best to obtain a few quotes from different mechanics to compare prices.