Engine-CodesGMC – P0267 2018 GMC Sierra

P0267 2018 GMC Sierra Code - Cylinder 3 Injector Control Circuit Low Voltage

Quick Answer

The diagnostic trouble code P0267 for a 2018 GMC Sierra indicates an issue with the Cylinder 3 Injector Control Circuit having low voltage. Common causes include Faulty fuel injector in cylinder 3, Wiring or connector issues in the injector control circuit, Malfunctioning 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
P0267 2018 GMC Sierra indicates Cylinder 3 Injector Control Circuit Low Voltage.
Common causes
Common causes include Faulty fuel injector in cylinder 3, Wiring or connector issues in the injector control circuit, Malfunctioning 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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0267 2018 GMC Sierra Description

The diagnostic trouble code P0267 for a 2018 GMC Sierra indicates an issue with the Cylinder 3 Injector Control Circuit having low voltage. In simpler terms, this code suggests that there is a problem with the fuel injector in cylinder 3 of the engine not receiving enough electrical voltage to operate properly. The fuel injector is responsible for delivering the precise amount of fuel to the combustion chamber for efficient combustion, so a low voltage situation can lead to a range of performance issues in the vehicle.

OBDII Code P0267 2018 GMC Sierra - Cylinder 3 Injector Control Circuit Low Voltage
P0267 2018 GMC Sierra Code - Cylinder 3 Injector Control Circuit Low Voltage

Common Causes of P0267 2018 GMC Sierra

  1. Faulty fuel injector in cylinder 3
  2. Wiring or connector issues in the injector control circuit
  3. Malfunctioning Engine Control Module (ECM)
  4. Fuel delivery problems

Symptoms of P0267 2018 GMC Sierra

  1. Rough idling or engine misfires
  2. Decreased engine performance
  3. Hesitation or stumbling during acceleration
  4. Poor fuel efficiency
  5. Potential stalling of the engine

How to Fix P0267 2018 GMC Sierra

  1. Begin by conducting a thorough inspection of the injector control circuit, including the wiring, connectors, and the fuel injector itself.
  2. Use a multimeter to check the voltage at the fuel injector to confirm if it is indeed receiving low voltage.
  3. Replace the fuel injector in cylinder 3 if it is found to be faulty.
  4. Repair or replace any damaged wiring or connectors in the injector circuit.
  5. If necessary, diagnose and address any ECM issues that may be causing the low voltage situation.

Cost to Fix P0267 2018 GMC Sierra

The typical cost for repairing a Cylinder 3 Injector Control Circuit Low Voltage issue can range from $150 to $500, depending on the specific cause of the problem and the cost of parts and labor in your area. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to get a detailed estimate from a qualified mechanic before proceeding with the repair.

Tech Notes for P0267 2018 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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