AutoCodes – GMC – P2301 2014 GMC Sierra

P2301 2014 GMC Sierra Code - Ignition Coil 1 Control Circuit High Voltage

Quick Answer

The ignition system on this engine uses ignition coils with integrated power transistors. Common causes include Faulty Ignition Coil 1, Ignition Coil 1 harness is open or shorted, Ignition Coil 1 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: P2301 2014 GMC Sierra indicates Ignition Coil 1 Control Circuit High Voltage.
Common causes: Common causes include Faulty Ignition Coil 1, Ignition Coil 1 harness is open or shorted, Ignition Coil 1 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.

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Code Popularity 137

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
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Code P2301 2014 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 P2301 2014 GMC Sierra - Ignition Coil 1 Control Circuit High Voltage - AutoCodes.com — P2301 2014 GMC Sierra Code - Ignition Coil 1 Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2301 2014 GMC Sierra?

Faulty Ignition Coil 1
Ignition Coil 1 harness is open or shorted
Ignition Coil 1 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2301 2014 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 P2301 2014 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 P2301 2014 GMC Sierra code?

Need more information on how to fix the P2301 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P2301 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P2301 in a 2014 GMC Sierra?

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

2. What does the OBDII code P2301 for Ignition Coil 1 Control Circuit High Voltage mean?

- The code indicates a high voltage condition in the control circuit of ignition coil 1 in the GMC Sierra.

3. What are the possible causes of OBDII code P2301 in a 2014 GMC Sierra?

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

4. How can I diagnose the OBDII code P2301 in my GMC Sierra?

- Diagnose by visually inspecting the ignition coil and its connections, testing the ignition coil for resistance, and checking the wiring and connectors for any damage.

5. What is the typical repair process for OBDII code P2301 in a 2014 GMC Sierra?

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

6. Can driving with OBDII code P2301 in a GMC Sierra cause further damage?

- Driving with the code may lead to prolonged engine misfires, potential catalytic converter damage, and decreased fuel efficiency if not addressed promptly.

7. Are there any preventive maintenance tips to avoid OBDII code P2301 in a GMC Sierra?

- Regularly inspecting and maintaining the ignition system components, such as the spark plugs and ignition coils, can help prevent issues that may trigger this code.

8. How much does it typically cost to repair OBDII code P2301 in a 2014 GMC Sierra?

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

9. Can I reset the Check Engine Light after fixing OBDII code P2301 in my GMC Sierra?

- Yes, the Check Engine Light can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the code.

10. Should I continue driving my GMC Sierra with OBDII code P2301 if the symptoms are not severe?

- It is not recommended to drive the vehicle with this code present, as unresolved ignition coil issues can lead to more significant problems over time.