AutoCodes – Chevrolet – P2301 Chevrolet

P2301 Chevrolet 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 Chevrolet 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 1,613

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 Jul 31, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2301 Chevrolet 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 Chevrolet - Ignition Coil 1 Control Circuit High Voltage - AutoCodes.com — P2301 Chevrolet Code - Ignition Coil 1 Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2301 Chevrolet?

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 Chevrolet?

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 Chevrolet 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 Chevrolet code?

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

Need Help with the Code?

Get the P2301 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P2301 2014 Chevrolet Silverado — Ignition Coil 1 Control Circuit High Voltage
P2301 2015 Chevrolet Silverado — Ignition Coil 1 Control Circuit High Voltage
P2301 2016 Chevrolet Silverado — Ignition Coil 1 Control Circuit High Voltage
P2301 2017 Chevrolet Silverado — Ignition Coil 1 Control Circuit High Voltage
P2301 2018 Chevrolet Silverado — Ignition Coil 1 Control Circuit High Voltage

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 Chevrolet Code

What does the OBDII code P2301 mean for a Chevrolet vehicle?

The code P2301 indicates a problem with the ignition coil 1 control circuit, specifically that there is high voltage detected where there shouldn't be, which can affect engine performance.

What are common symptoms of the P2301 code?

Common symptoms include engine misfires, poor acceleration, rough idling, a decrease in fuel efficiency, and the check engine light being illuminated.

What causes the P2301 code to trigger?

Possible causes include a faulty ignition coil, wiring issues such as shorts or open circuits, a malfunctioning powertrain control module (PCM), or damaged connectors related to the ignition coil.

How can I diagnose the P2301 code?

Start by using an OBDII scanner to confirm the code. Inspect the ignition coil and its wiring for damage or loose connections. Testing the ignition coil with a multimeter can help determine if itâ€™s functioning properly.

What repairs are needed to fix the P2301 code?

Repairs may involve replacing the faulty ignition coil, repairing damaged wiring or connectors, or potentially replacing the PCM if it is found to be defective.

Can driving with the P2301 code cause damage to my vehicle?

Yes, driving with this code can lead to poor engine performance and can potentially cause further issues, such as damage to the catalytic converter due to unburned fuel.

Is it safe to continue driving my Chevrolet with the P2301 code?

While it may be safe for a short distance, it is not advisable to drive long-term without addressing the issue as it can lead to more serious engine problems.

How can I prevent the P2301 code from reoccurring?

Regular maintenance, including checking ignition components, ensuring proper connections, and addressing any electrical issues promptly, can help prevent the reoccurrence of this code.

Can I clear the P2301 code and expect it not to return?

Clearing the code may provide a temporary fix, but if the underlying issue is not resolved, the code will likely return after some time or after the vehicle is driven.