AutoCodes – GMC – P216F 2017 GMC Sierra

P216F 2017 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 2017 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 173

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 2017 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 2017 GMC Sierra - Cylinder 6 Injector High Control Circuit High Voltage - AutoCodes.com — P216F 2017 GMC Sierra Code - Cylinder 6 Injector High Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P216F 2017 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 2017 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 2017 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 2017 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 P216F 2017 GMC Sierra Code

1. What does the OBDII code P216F mean on a 2017 GMC Sierra?

P216F indicates a high voltage issue in the Cylinder 6 Injector High Control Circuit, meaning the injector is receiving an abnormally high electrical signal.

2. What are the common symptoms of code P216F in a 2017 GMC Sierra?

Symptoms may include engine misfires, rough idling, reduced power, poor fuel economy, and the check engine light illuminating.

3. What causes the P216F code to appear?

Common causes include a faulty fuel injector, wiring issues like damaged or corroded connectors, or a malfunctioning engine control module (ECM).

4. Can I drive my 2017 GMC Sierra with the P216F code?

Itâ€™s not recommended, as driving with this code can lead to further engine damage, reduced performance, and safety concerns.

5. How do I diagnose the P216F code?

Start by inspecting the wiring and connectors for Cylinder 6â€™s fuel injector, check the injector itself for faults, and use a multimeter to test voltage levels.

6. How do I fix the P216F code on my GMC Sierra?

Repairs may include replacing the Cylinder 6 fuel injector, repairing damaged wiring or connectors, or reprogramming/replacing the ECM if needed.

7. Can a dirty or clogged injector cause the P216F code?

No, this code specifically refers to an electrical issue in the injector circuit, not a clog or mechanical obstruction.

8. How much does it cost to fix the P216F code?

Costs vary depending on the cause, but replacing a fuel injector can range from $200 to $600, while addressing wiring or ECM issues may cost more.

9. Will clearing the code fix the problem?

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

10. Can a bad ECM cause the P216F code?

Yes, a malfunctioning ECM can send incorrect voltage signals to the injector, triggering the P216F code. This should be tested after ruling out simpler causes.