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Engine-Codes – GMC – P2307 2014 GMC Sierra

P2307 2014 GMC Sierra Code - Ignition Coil 3 Control Circuit High Voltage

Quick Answer

The P2307 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Ignition Coil 3 Control Circuit High Voltage. Common causes include Faulty ignition coil, Wiring or connector issues in the ignition coil circuit, PCM software or hardware malfunction. 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
P2307 2014 GMC Sierra indicates Ignition Coil 3 Control Circuit High Voltage.
Common causes
Common causes include Faulty ignition coil, Wiring or connector issues in the ignition coil circuit, PCM software or hardware malfunction.
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 06, 2024
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Code P2307 2014 GMC Sierra Description

The P2307 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Ignition Coil 3 Control Circuit High Voltage. This means that the powertrain control module (PCM) has detected that the voltage in the control circuit for ignition coil 3 is higher than normal. The ignition coil is responsible for converting the low voltage from the battery into the high voltage needed to create a spark in the spark plugs, which ignites the air-fuel mixture in the engine cylinders. When the control circuit voltage is too high, it can lead to misfires, rough idling, poor fuel economy, and overall decreased engine performance.

OBDII Code P2307 2014 GMC Sierra - Ignition Coil 3 Control Circuit High Voltage
P2307 2014 GMC Sierra Code - Ignition Coil 3 Control Circuit High Voltage

Common Causes of P2307 2014 GMC Sierra

  1. Faulty ignition coil
  2. Wiring or connector issues in the ignition coil circuit
  3. PCM software or hardware malfunction
  4. Spark plug issues
  5. Engine mechanical problems affecting ignition coil 3

Symptoms of P2307 2014 GMC Sierra

  1. Engine misfires or rough idling
  2. Decreased fuel efficiency
  3. Loss of power or acceleration
  4. Illuminated check engine light
  5. Engine stalling or difficulty starting

How to Fix P2307 2014 GMC Sierra

  1. Begin by diagnosing the specific source of the high voltage in the ignition coil 3 control circuit using a scan tool.
  2. Inspect the wiring and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the ignition coil for proper function and replace if found to be faulty.
  4. Check and replace spark plugs if necessary.
  5. Clear the DTC and reset the PCM to see if the issue has been resolved.

Cost to Fix P2307 2014 GMC Sierra

The cost of repairing the P2307 code for an Ignition Coil 3 Control Circuit High Voltage can vary depending on the specific cause of the issue. In general, replacing an ignition coil can cost between $50 and $200, while replacing spark plugs can range from $50 to $150. Labor costs at an auto repair shop can add an additional $80 to $150 per hour. Overall, the total repair cost for this issue could range from $150 to $500 or more, depending on the extent of the problem and the parts needed. It is recommended to obtain quotes from several auto repair shops to compare prices and ensure a fair price for the repair.

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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 P2307 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P2307 on a 2014 GMC Sierra?

- Common symptoms include engine misfires, rough idling, lack of power, and illuminated check engine light.

2. What does the OBDII code P2307 indicate specifically for a 2014 GMC Sierra?

- The code P2307 specifically indicates a problem with the ignition coil 3 control circuit showing high voltage.

3. What are the possible causes of OBDII code P2307 on a 2014 GMC Sierra?

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

4. How can I diagnose the issue related to OBDII code P2307 on my 2014 GMC Sierra?

- You can diagnose the issue by inspecting the ignition coil and its connections, checking for damaged wiring, and using a diagnostic scan tool to monitor voltage readings.

5. Can I continue driving my 2014 GMC Sierra with OBDII code P2307?

- It is not recommended to drive the vehicle with a persistent P2307 code, as it can lead to further damage to the ignition system and engine components.

6. How can I repair OBDII code P2307 on my 2014 GMC Sierra?

- The repair typically involves replacing the faulty ignition coil, repairing any damaged wiring or connectors, and clearing the trouble codes with a diagnostic tool.

7. Is it necessary to reset the ECM after repairing OBDII code P2307 on a 2014 GMC Sierra?

- Yes, it is important to reset the ECM after making repairs to ensure the system recognizes the fix and clears the stored trouble codes.

8. Are there any preventive maintenance tips to avoid OBDII code P2307 on a 2014 GMC Sierra?

- Regularly inspecting the ignition system components, keeping up with scheduled maintenance, and addressing any engine performance issues promptly can help prevent the code from appearing.

9. How much does it cost to repair OBDII code P2307 on a 2014 GMC Sierra?

- The cost of repairing the code P2307 can vary depending on the exact cause of the issue, but it typically involves the cost of the replacement ignition coil and any necessary labor charges.

10. Can a DIY enthusiast fix OBDII code P2307 on a 2014 GMC Sierra?

- While some DIY enthusiasts may be able to replace the ignition coil themselves, diagnosing and repairing the underlying cause of the code may require professional tools and expertise.

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