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Engine-Codes – GMC – P216E 2018 GMC Sierra

P216E 2018 GMC Sierra Code - Cylinder 6 Injector High Control Circuit Low Voltage

Quick Answer

The diagnostic trouble code P216E in a 2018 GMC Sierra indicates an issue with the Cylinder 6 Injector High Control Circuit Low Voltage. Common causes include Faulty fuel injector for cylinder 6, Damaged wiring harness or connectors in the injector circuit, Poor electrical connection in the control circuit. 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
P216E 2018 GMC Sierra indicates Cylinder 6 Injector High Control Circuit Low Voltage.
Common causes
Common causes include Faulty fuel injector for cylinder 6, Damaged wiring harness or connectors in the injector circuit, Poor electrical connection in the control circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P216E 2018 GMC Sierra Description

The diagnostic trouble code P216E in a 2018 GMC Sierra indicates an issue with the Cylinder 6 Injector High Control Circuit Low Voltage. This means that the Engine Control Module (ECM) has detected a lower than expected voltage in the control circuit of the fuel injector for cylinder 6. The fuel injector is responsible for delivering the precise amount of fuel into the combustion chamber for optimal performance. When the voltage in the control circuit is low, it can affect the injector's ability to function properly, leading to potential misfires, rough idling, and decreased fuel efficiency.

OBDII Code P216E 2018 GMC Sierra - Cylinder 6 Injector High Control Circuit Low Voltage
P216E 2018 GMC Sierra Code - Cylinder 6 Injector High Control Circuit Low Voltage

Common Causes of P216E 2018 GMC Sierra

  1. Faulty fuel injector for cylinder 6
  2. Damaged wiring harness or connectors in the injector circuit
  3. Poor electrical connection in the control circuit
  4. Malfunctioning Engine Control Module (ECM)
  5. Corrosion or debris affecting the injector circuit

Symptoms of P216E 2018 GMC Sierra

  1. Check Engine Light illuminated
  2. Rough idling or shaking engine
  3. Decreased fuel efficiency
  4. Engine misfires
  5. Hesitation during acceleration

How to Fix P216E 2018 GMC Sierra

  1. Diagnose the specific cause of the low voltage in the control circuit using a diagnostic scanner.
  2. Inspect the wiring harness and connectors for any damage or corrosion, repairing or replacing as necessary.
  3. Test the fuel injector for cylinder 6 to ensure it is functioning correctly, replacing it if faulty.
  4. Check and clean any electrical connections in the injector control circuit to ensure a secure connection.
  5. Clear the diagnostic trouble codes and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P216E 2018 GMC Sierra

The cost of repairing a Cylinder 6 Injector High Control Circuit Low Voltage issue in a 2018 GMC Sierra can vary depending on the specific cause of the problem and the extent of the repair needed. On average, the parts for a new fuel injector can range from $100 to $300, while the labor costs for diagnosis and repair can range from $200 to $500. Overall, the total repair cost could fall between $300 to $800. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, shop rates, and any additional parts or services required.

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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 P216E 2018 GMC Sierra Code

1. What are common symptoms of OBDII code P216E in a 2018 GMC Sierra related to the Cylinder 6 Injector High Control Circuit Low Voltage?

- Common symptoms include rough idling, misfiring, poor engine performance, and possible stalling.

2. What are the possible causes of OBDII code P216E in a 2018 GMC Sierra indicating an issue with the Cylinder 6 Injector High Control Circuit Low Voltage?

- Possible causes can be a faulty fuel injector, wiring issues, poor electrical connections, or a defective Engine Control Module (ECM).

3. How can I diagnose the Cylinder 6 Injector High Control Circuit Low Voltage issue in my 2018 GMC Sierra triggering OBDII code P216E?

- You can use a diagnostic scanner to read the code, perform a visual inspection of the injector and wiring, test the injector's resistance, and check for voltage at the injector connector.

4. What are some repair tips for resolving OBDII code P216E in a 2018 GMC Sierra related to the Cylinder 6 Injector High Control Circuit Low Voltage?

- Repair tips include addressing any wiring or connector issues, replacing the faulty fuel injector, ensuring proper ECM function, and clearing the trouble code after repairs.

5. Can driving with OBDII code P216E in a 2018 GMC Sierra indicating Cylinder 6 Injector High Control Circuit Low Voltage cause further damage?

- Continuing to drive with this issue can potentially lead to poor engine performance, decreased fuel efficiency, and further damage to the engine components over time.

6. How urgent is it to address OBDII code P216E in a 2018 GMC Sierra due to the Cylinder 6 Injector High Control Circuit Low Voltage?

- It is advisable to address this issue promptly to prevent potential engine damage, poor performance, and increased fuel consumption.

7. Is it possible to clear OBDII code P216E in a 2018 GMC Sierra related to the Cylinder 6 Injector High Control Circuit Low Voltage without fixing the underlying issue?

- Clearing the code without fixing the underlying problem will likely result in the code reappearing once the ECM detects the issue again during its diagnostic checks.

8. Can a DIY enthusiast fix OBDII code P216E in a 2018 GMC Sierra associated with the Cylinder 6 Injector High Control Circuit Low Voltage?

- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to address this issue by following repair guides and diagnostic procedures.

9. What is the typical cost to repair OBDII code P216E in a 2018 GMC Sierra due to the Cylinder 6 Injector High Control Circuit Low Voltage?

- The cost of repairing this issue can vary based on the specific problem, parts needed, labor rates, and whether the repair is done at a dealership or an independent mechanic.

10. Is it recommended to seek professional help for diagnosing and repairing OBDII code P216E in a 2018 GMC Sierra related to the Cylinder 6 Injector High Control Circuit Low Voltage?

- Seeking professional help from a qualified mechanic or dealership is advisable for accurate diagnosis, proper repair, and ensuring the issue is resolved correctly.

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