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Engine-Codes – GMC – P0283 2016 GMC Sierra

P0283 2016 GMC Sierra Code - Cylinder 8 Injector Control Circuit High Voltage

Quick Answer

The P0283 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates an issue with the Cylinder 8 Injector Control Circuit High Voltage. Common causes include Faulty fuel injector: The injector itself may be malfunctioning and sending incorrect signals, Wiring issues: Damaged or corroded wiring in the injector control circuit can cause high voltage readings, ECM problem: A fault in the engine control module can disrupt the injector 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
P0283 2016 GMC Sierra indicates Cylinder 8 Injector Control Circuit High Voltage.
Common causes
Common causes include Faulty fuel injector: The injector itself may be malfunctioning and sending incorrect signals, Wiring issues: Damaged or corroded wiring in the injector control circuit can cause high voltage readings, ECM problem: A fault in the engine control module can disrupt the injector 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 15, 2024
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Code P0283 2016 GMC Sierra Description

The P0283 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates an issue with the Cylinder 8 Injector Control Circuit High Voltage. This code is specifically related to the fuel injector for cylinder 8 in the engine. The fuel injector is responsible for delivering the precise amount of fuel into the combustion chamber at the right time to ensure proper engine performance. When the control circuit for this injector is experiencing high voltage, it means that there is an electrical problem affecting the injector's operation.

OBDII Code P0283 2016 GMC Sierra - Cylinder 8 Injector Control Circuit High Voltage
P0283 2016 GMC Sierra Code - Cylinder 8 Injector Control Circuit High Voltage

Common Causes of P0283 2016 GMC Sierra

  1. Faulty fuel injector: The injector itself may be malfunctioning and sending incorrect signals.
  2. Wiring issues: Damaged or corroded wiring in the injector control circuit can cause high voltage readings.
  3. ECM problem: A fault in the engine control module can disrupt the injector control circuit.
  4. Poor connection: Loose or poor connections in the circuit can lead to high voltage signals.

Symptoms of P0283 2016 GMC Sierra

  1. Rough idling: The engine may run rough or unevenly at idle due to the incorrect fuel mixture.
  2. Decreased fuel efficiency: A rich fuel mixture can lead to increased fuel consumption.
  3. Hesitation during acceleration: The engine may struggle to accelerate smoothly due to the incorrect fuel delivery.
  4. Engine misfires: High voltage in the injector control circuit can cause misfires, leading to a loss of power and rough running.

How to Fix P0283 2016 GMC Sierra

  1. Diagnose the issue: Use a scan tool to read the DTC and perform further testing to pinpoint the exact cause of the high voltage in the injector control circuit.
  2. Inspect the wiring: Check the wiring harness for any damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the fuel injector: Verify the functionality of the fuel injector by conducting resistance and voltage tests. Replace if necessary.
  4. Check the ECM: Ensure that the engine control module is functioning correctly and reprogram or replace if a fault is detected.
  5. Clear the code: After completing the repairs, clear the DTC and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P0283 2016 GMC Sierra

The typical repair costs for addressing a P0283 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty fuel injector can cost between $150 and $300, while repairing wiring issues may range from $100 to $200. If the ECM needs to be replaced, the cost can be higher, typically ranging from $500 to $1000. Labor costs at auto repair shops can vary between $80 and $150 per hour, so the total repair bill can add up quickly. It is recommended to consult with a trusted mechanic or dealership to get an accurate estimate based on your vehicle's specific needs.

What does this mean?

Tech Notes for P0283 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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