AutoCodes – GMC – P2301 2015 GMC Sierra

P2301 2015 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 2015 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 169

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 2015 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 2015 GMC Sierra - Ignition Coil 1 Control Circuit High Voltage - AutoCodes.com — P2301 2015 GMC Sierra Code - Ignition Coil 1 Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2301 2015 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 2015 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 2015 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 2015 GMC Sierra 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 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P2301 in a 2015 GMC Sierra?

The common symptoms of OBDII code P2301 (Ignition Coil 1 Control Circuit High Voltage) in a 2015 GMC Sierra may include engine misfires, rough idling, decreased fuel efficiency, and illuminated Check Engine light.

2. What are the possible causes of OBDII code P2301 in a 2015 GMC Sierra?

Possible causes of OBDII code P2301 in a 2015 GMC Sierra include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, issues with the powertrain control module (PCM), or a problem with the ignition system.

3. How can I diagnose the source of OBDII code P2301 in my 2015 GMC Sierra?

Diagnosing the source of OBDII code P2301 involves checking the ignition coil and its connections for any damage, testing the wiring for continuity and proper voltage, inspecting the PCM for any signs of malfunction, and performing a thorough inspection of the ignition system components.

4. Can I still drive my 2015 GMC Sierra with OBDII code P2301 present?

It is not recommended to drive your 2015 GMC Sierra with OBDII code P2301 present, as it can lead to further damage to the engine and other components. It's best to address the issue promptly to avoid potential safety hazards.

5. How can I repair OBDII code P2301 in my 2015 GMC Sierra?

Repairing OBDII code P2301 in a 2015 GMC Sierra typically involves replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, resetting the PCM, and clearing the trouble codes from the vehicle's memory.

6. Are there any specific precautions to take when working on OBDII code P2301 in a 2015 GMC Sierra?

When working on OBDII code P2301 in a 2015 GMC Sierra, it is important to disconnect the battery before starting any repairs to prevent electrical shock or damage to the vehicle's electronics. Additionally, follow proper safety procedures and use appropriate tools for the job.

7. Can a DIY enthusiast tackle the repair of OBDII code P2301 in a 2015 GMC Sierra?

While some DIY enthusiasts may have the skills to address OBDII code P2301 in a 2015 GMC Sierra, it is recommended to have a professional mechanic diagnose and repair the issue to ensure it is properly resolved and to prevent any further complications.

8. How much does it typically cost to repair OBDII code P2301 in a 2015 GMC Sierra at a repair shop?

The cost of repairing OBDII code P2301 in a 2015 GMC Sierra at a repair shop can vary depending on the extent of the issue, the cost of parts needed for the repair, and the labor rates of the mechanic. It's advisable to get a few quotes from different shops for comparison.

9. Are there any preventative maintenance tips to avoid OBDII code P2301 in a 2015 GMC Sierra?

To help prevent OBDII code P2301 in a 2015 GMC Sierra, it's essential to follow the manufacturer's recommended maintenance schedule, regularly inspect the ignition system components for wear or damage, and address any issues promptly to avoid more significant problems down the road.