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Engine-Codes – GMC – P0276 2016 GMC Sierra

P0276 2016 GMC Sierra Code - Cylinder 6 Injector Control Circuit Low Voltage

Quick Answer

The diagnostic trouble code P0276 in a 2016 GMC Sierra indicates an issue with the Cylinder 6 Injector Control Circuit having low voltage. Common causes include Faulty fuel injector for cylinder 6, Wiring issue in the injector control circuit, Problem with the Engine Control Module (ECM). 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
P0276 2016 GMC Sierra indicates Cylinder 6 Injector Control Circuit Low Voltage.
Common causes
Common causes include Faulty fuel injector for cylinder 6, Wiring issue in the injector control circuit, Problem with the Engine Control Module (ECM).
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 15, 2024
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Code P0276 2016 GMC Sierra Description

The diagnostic trouble code P0276 in a 2016 GMC Sierra indicates an issue with the Cylinder 6 Injector Control Circuit having low voltage. This means that the fuel injector for cylinder 6 is not receiving the proper amount of voltage to function correctly. The fuel injector is responsible for delivering the precise amount of fuel into the combustion chamber for efficient combustion. When the voltage is too low, it can lead to a lean air-fuel mixture, causing poor engine performance, misfires, and potentially engine damage.

OBDII Code P0276 2016 GMC Sierra - Cylinder 6 Injector Control Circuit Low Voltage
P0276 2016 GMC Sierra Code - Cylinder 6 Injector Control Circuit Low Voltage

Common Causes of P0276 2016 GMC Sierra

  1. Faulty fuel injector for cylinder 6
  2. Wiring issue in the injector control circuit
  3. Problem with the Engine Control Module (ECM)
  4. Poor connection in the circuit
  5. Corrosion or damage to electrical connectors

Symptoms of P0276 2016 GMC Sierra

  1. Rough idle
  2. Hesitation during acceleration
  3. Decreased power
  4. Engine misfires
  5. Stalling

How to Fix P0276 2016 GMC Sierra

  1. Begin by conducting a visual inspection of the wiring and connectors related to the fuel injector for cylinder 6. Look for any signs of damage, corrosion, or loose connections.
  2. Use a multimeter to test the voltage at the fuel injector to determine if it is receiving the proper voltage. If the voltage is low, further diagnosis is needed to pinpoint the exact cause.
  3. Test the fuel injector itself to check for proper operation. If the injector is faulty, it will need to be replaced.
  4. Check the Engine Control Module (ECM) for any error codes related to the injector circuit. If necessary, reprogram or replace the ECM.
  5. Clear the trouble code from the vehicle's computer after completing the repair and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0276 2016 GMC Sierra

The typical repair costs for addressing a Cylinder 6 Injector Control Circuit Low Voltage issue in a 2016 GMC Sierra can vary depending on the specific cause of the problem. In general, replacing a fuel injector can cost between $150 to $300, while diagnosing and repairing wiring or ECM issues can range from $200 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour, but rates can vary based on location and shop. It's advisable to consult with a professional mechanic to get an accurate estimate for the repair.

What does this mean?

Tech Notes for P0276 2016 GMC Sierra

A clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.

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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.

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