Engine-CodesGMC – P2306 2017 GMC Sierra

P2306 2017 GMC Sierra Code - Ignition Coil 3 Control Circuit Low Voltage

Quick Answer

The diagnostic trouble code P2306 for a 2017 GMC Sierra indicates an issue with the ignition coil 3 control circuit experiencing low voltage. Common causes include Faulty ignition coil, Damaged wiring or connectors in the 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
P2306 2017 GMC Sierra indicates Ignition Coil 3 Control Circuit Low Voltage.
Common causes
Common causes include Faulty ignition coil, Damaged wiring or connectors in the 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 14, 2024
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Code P2306 2017 GMC Sierra Description

The diagnostic trouble code P2306 for a 2017 GMC Sierra indicates an issue with the ignition coil 3 control circuit experiencing low voltage. The ignition coil is a crucial component in the vehicle's ignition system, responsible for converting the low voltage from the battery into the high voltage needed to ignite the air-fuel mixture in the engine cylinders. In this case, the control circuit for ignition coil 3 is not receiving the proper voltage, which can lead to misfires, rough idling, and overall poor engine performance.

OBDII Code P2306 2017 GMC Sierra - Ignition Coil 3 Control Circuit Low Voltage
P2306 2017 GMC Sierra Code - Ignition Coil 3 Control Circuit Low Voltage

Common Causes of P2306 2017 GMC Sierra

  1. Faulty ignition coil
  2. Damaged wiring or connectors in the control circuit
  3. Malfunctioning engine control module (ECM)
  4. Issues with the power supply to the ignition coil
  5. Corrosion or moisture in the ignition system components

Symptoms of P2306 2017 GMC Sierra

  1. Engine misfires or rough idling
  2. Reduced engine power and acceleration
  3. Check Engine Light illuminated on the dashboard
  4. Poor fuel efficiency
  5. Engine stalling or hesitation during acceleration

How to Fix P2306 2017 GMC Sierra

  1. Begin by diagnosing the specific cause of the low voltage in the ignition coil 3 control circuit using a diagnostic scanner and multimeter.
  2. Inspect the ignition coil, wiring, and connectors for any visible damage or corrosion. Replace any damaged components.
  3. Test the power supply to the ignition coil and ensure it is within the manufacturer's specified range.
  4. If the issue persists, replace the faulty ignition coil or repair any underlying issues with the control circuit.
  5. Clear the diagnostic trouble codes and test the vehicle to ensure the issue has been resolved.

Cost to Fix P2306 2017 GMC Sierra

The typical repair costs for addressing the P2306 code on a 2017 GMC Sierra can range from $150 to $400, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

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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 P2306 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P2306 in a 2017 GMC Sierra related to Ignition Coil 3 Control Circuit Low Voltage?

- Common symptoms include engine misfires, rough idling, loss of power, and illuminated Check Engine Light.

2. What are the possible causes of OBDII code P2306 in a 2017 GMC Sierra indicating Ignition Coil 3 Control Circuit Low Voltage?

- Potential causes may include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or issues with the Engine Control Module (ECM).

3. How can I diagnose the OBDII code P2306 in my 2017 GMC Sierra that points to Ignition Coil 3 Control Circuit Low Voltage?

- Diagnostic steps may involve checking the condition of the ignition coil, inspecting the wiring and connectors for damage, and using a multimeter to test voltage levels in the circuit.

4. Is it safe to continue driving my 2017 GMC Sierra with OBDII code P2306 indicating Ignition Coil 3 Control Circuit Low Voltage?

- It is not recommended to drive the vehicle with this code as it can lead to further damage to the ignition system and potentially affect engine performance.

5. How can I repair OBDII code P2306 in my 2017 GMC Sierra related to Ignition Coil 3 Control Circuit Low Voltage?

- Repair options may include replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, and resetting the ECM after the issue is resolved.

6. Can a DIY enthusiast fix OBDII code P2306 in a 2017 GMC Sierra related to Ignition Coil 3 Control Circuit Low Voltage?

- While some DIY enthusiasts may have the skills to diagnose and replace the ignition coil, it is recommended to consult a professional mechanic for proper diagnosis and repair of electrical issues.

7. Can weather conditions or driving habits contribute to triggering OBDII code P2306 in a 2017 GMC Sierra for Ignition Coil 3 Control Circuit Low Voltage?

- Extreme weather conditions, such as moisture or excessive heat, can potentially affect the ignition system. Additionally, aggressive driving habits may contribute to premature ignition coil failure.

8. How much does it typically cost to repair OBDII code P2306 in a 2017 GMC Sierra related to Ignition Coil 3 Control Circuit Low Voltage?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Are there any preventive maintenance tips to avoid triggering OBDII code P2306 in a 2017 GMC Sierra for Ignition Coil 3 Control Circuit Low Voltage?

- Regularly scheduled maintenance, such as checking and replacing spark plugs, inspecting ignition components, and avoiding harsh driving conditions, can help prevent ignition system issues.

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