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Engine-Codes – GMC – P0273 2014 GMC Sierra

P0273 2014 GMC Sierra Code - Cylinder 5 Injector Control Circuit Low Voltage

Quick Answer

The diagnostic trouble code P0273 for a 2014 GMC Sierra indicates an issue with the Cylinder 5 Injector Control Circuit experiencing low voltage. Common causes include Faulty fuel injector for cylinder 5, 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
P0273 2014 GMC Sierra indicates Cylinder 5 Injector Control Circuit Low Voltage.
Common causes
Common causes include Faulty fuel injector for cylinder 5, 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 P0273 2014 GMC Sierra Description

The diagnostic trouble code P0273 for a 2014 GMC Sierra indicates an issue with the Cylinder 5 Injector Control Circuit experiencing low voltage. This means that the fuel injector for cylinder 5 is not receiving the proper amount of voltage to function correctly. The fuel injector is responsible for delivering fuel into the combustion chamber of the engine at the right time and in the right amount. When the voltage is too low, it can lead to a lean air-fuel mixture, causing the engine to run poorly and potentially misfire.

OBDII Code P0273 2014 GMC Sierra - Cylinder 5 Injector Control Circuit Low Voltage
P0273 2014 GMC Sierra Code - Cylinder 5 Injector Control Circuit Low Voltage

Common Causes of P0273 2014 GMC Sierra

  1. Faulty fuel injector for cylinder 5
  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 P0273 2014 GMC Sierra

  1. Rough idle
  2. Hesitation or stumbling during acceleration
  3. Decreased power and fuel efficiency
  4. Engine misfires
  5. Engine stalling

How to Fix P0273 2014 GMC Sierra

  1. Begin by inspecting the wiring and connectors in the injector control circuit for any damage or corrosion. Repair or replace as necessary.
  2. Test the fuel injector for cylinder 5 to ensure it is functioning correctly. Replace the injector if it is found to be faulty.
  3. Check the engine control module (ECM) for any signs of damage or malfunction. Replace if necessary.
  4. Clear the diagnostic trouble codes from the vehicle's computer and test drive to verify that the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to pinpoint the exact cause of the low voltage condition.

Cost to Fix P0273 2014 GMC Sierra

The typical repair costs for addressing a Cylinder 5 Injector Control Circuit Low Voltage issue can vary depending on the specific cause of the problem. In general, replacing a fuel injector can cost between $150 and $300, while repairing wiring or connectors may range from $50 to $150. The cost of replacing an engine control module (ECM) can be higher, typically ranging from $300 to $800. Labor costs can add to the total repair bill, with rates varying between $80 and $150 per hour. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of the vehicle.

What does this mean?

Tech Notes for P0273 2014 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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