AutoCodes – GMC – P2306 2017 GMC Sierra

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

Quick Answer

The ignition system on this engine uses ignition coils with integrated power transistors. Common causes include Faulty Ignition Coil 3, Ignition Coil 3 harness is open or shorted, Ignition Coil 3 circuit poor electrical connection. 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 3, Ignition Coil 3 harness is open or shorted, Ignition Coil 3 circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 202

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2306 2017 GMC Sierra Description

The ignition system on this engine uses ignition coils with integrated power transistors. The Engine Control Module (ECM) controls the spark event for each cylinder through individual ignition coil control circuits. When the ECM commands the ignition control circuit On, electrical current flows through the primary winding of the ignition coil, creating a magnetic field. When a spark event is requested, the ECM commands the ignition control circuit Off, interrupting current flow through the primary winding. The collapsing magnetic field created by the primary winding induces a high voltage in the secondary winding, which is connected to the spark plugs. The Diagnostic Trouble Code (DTC) will be set when the control circuit commanded by the ECM state does not match the actual state.

OBDII Code P2306 2017 GMC Sierra - Ignition Coil 3 Control Circuit Low Voltage - AutoCodes.com — P2306 2017 GMC Sierra Code - Ignition Coil 3 Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2306 2017 GMC Sierra?

Faulty Ignition Coil 3
Ignition Coil 3 harness is open or shorted
Ignition Coil 3 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2306 2017 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2306 2017 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2306 2017 GMC Sierra code?

Need more information on how to fix the P2306 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2306 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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.