AutoCodes – GMC – P216C 2015 GMC Sierra

P216C 2015 GMC Sierra Code - Cylinder 5 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 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: P216C 2015 GMC Sierra indicates Cylinder 5 Injector High Control Circuit High 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 815

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 P216C 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 voltage for greater than 2 s.

OBDII Code P216C 2015 GMC Sierra - Cylinder 5 Injector High Control Circuit High Voltage - AutoCodes.com — P216C 2015 GMC Sierra Code - Cylinder 5 Injector High Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P216C 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 P216C 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 P216C 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 P216C 2015 GMC Sierra code?

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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 P216C 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P216C in a 2015 GMC Sierra related to the Cylinder 5 Injector High Control Circuit High Voltage?

- Common symptoms include rough idling, reduced engine performance, and potential misfires in cylinder 5.

2. What are the possible causes of OBDII code P216C in a 2015 GMC Sierra?

- The code P216C can be triggered by issues such as a faulty fuel injector in cylinder 5, a wiring harness problem, or an ECM (Engine Control Module) malfunction.

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

- Diagnostic steps may include checking the wiring harness for damage, testing the fuel injector in cylinder 5, and scanning the ECM for any related error codes.

4. Can a DIY enthusiast repair OBDII code P216C in a 2015 GMC Sierra?

- While some basic diagnostic steps can be performed by DIY enthusiasts, repairing the issue typically requires specialized tools and expertise, so it's recommended to consult a professional mechanic.

5. Are there any temporary fixes or workarounds for OBDII code P216C in a 2015 GMC Sierra?

- Temporary fixes are not recommended for this code, as addressing the root cause is essential to prevent further damage to the engine and emissions system.

6. How urgent is it to address OBDII code P216C in a 2015 GMC Sierra?

- It is important to address this code promptly to prevent potential engine damage, poor fuel economy, and increased emissions.

7. Can driving with OBDII code P216C in a 2015 GMC Sierra cause further damage?

- Continuing to drive with this code may lead to more severe engine issues over time, so it is advisable to address it as soon as possible.

8. How much does it typically cost to repair OBDII code P216C in a 2015 GMC Sierra?

- The cost of repairing this code can vary depending on the extent of the issue, but it may involve replacing the fuel injector, repairing wiring, or addressing ECM problems.

9. Is it safe to clear the OBDII code P216C in a 2015 GMC Sierra without fixing the underlying issue?

- Clearing the code without fixing the underlying problem is not recommended, as the issue will likely resurface, potentially causing more severe problems.

10. How can I prevent OBDII code P216C from recurring in my 2015 GMC Sierra?

- Regular maintenance, such as inspecting and maintaining the fuel injectors, checking the wiring harness for damage, and keeping the ECM in good condition, can help prevent the recurrence of this code.