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Engine-Codes – GMC – P216B 2015 GMC Sierra

P216B 2015 GMC Sierra Code - Cylinder 5 Injector High Control Circuit Low Voltage

Quick Answer

The diagnostic trouble code P216B for a 2015 GMC Sierra indicates an issue with the Cylinder 5 Injector High Control Circuit Low Voltage. Common causes include Faulty fuel injector in cylinder 5, Wiring issue in the control 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 in cylinder 5, Wiring issue in the control 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P216B 2015 GMC Sierra Description

The diagnostic trouble code P216B for a 2015 GMC Sierra indicates an issue with the Cylinder 5 Injector High Control Circuit Low Voltage. This means that the powertrain control module (PCM) has detected that the voltage in the control circuit for the fuel injector in cylinder 5 is lower than the specified range. The fuel injector is responsible for delivering the precise amount of fuel into the combustion chamber for proper engine operation. When the voltage in the control circuit is too low, it can lead to improper fuel delivery, affecting the engine's performance.

OBDII Code P216B 2015 GMC Sierra - Cylinder 5 Injector High Control Circuit Low Voltage
P216B 2015 GMC Sierra Code - Cylinder 5 Injector High Control Circuit Low Voltage

Common Causes of P216B 2015 GMC Sierra

  1. Faulty fuel injector in cylinder 5
  2. Wiring issue in the control circuit
  3. Poor electrical connection
  4. PCM malfunction
  5. Corrosion or damage to the wiring harness

Symptoms of P216B 2015 GMC Sierra

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

How to Fix P216B 2015 GMC Sierra

  1. Begin by conducting a visual inspection of the wiring harness and connectors related to the fuel injector in cylinder 5. Look for any signs of damage, corrosion, or loose connections.
  2. Use a multimeter to test the voltage in the control circuit for the fuel injector in cylinder 5. Compare the readings to the manufacturer's specifications to determine if the voltage is within the acceptable range.
  3. If the voltage is too low, replace the fuel injector in cylinder 5 with a new, high-quality part. Ensure proper installation and secure all connections.
  4. Clear the diagnostic trouble codes from the PCM using a scan tool and test drive the vehicle to ensure that the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be necessary to identify any underlying issues with the wiring, connectors, or PCM.

Cost to Fix P216B 2015 GMC Sierra

The typical repair costs for addressing a Cylinder 5 Injector High Control Circuit Low Voltage issue can vary depending on the specific cause of the problem. In general, the cost of replacing a fuel injector can range from $150 to $300 per injector, not including labor costs. Labor rates at auto repair shops typically range from $80 to $150 per hour, and the total repair cost can increase if additional parts or diagnostic tests are needed. It is advisable to consult with a qualified mechanic or dealership to obtain a more accurate estimate based on the specific circumstances of the vehicle.

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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.

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