AutoCodes – Chevrolet – P2304 Chevrolet

P2304 Chevrolet Code - Ignition Coil 2 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 2, Ignition Coil 2 harness is open or shorted, Ignition Coil 2 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
P2304 Chevrolet indicates Ignition Coil 2 Control Circuit High Voltage.
Common causes
Common causes include Faulty Ignition Coil 2, Ignition Coil 2 harness is open or shorted, Ignition Coil 2 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 889
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 31, 2021
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Code P2304 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 P2304 Chevrolet - Ignition Coil 2 Control Circuit High Voltage - AutoCodes.com
P2304 Chevrolet Code - Ignition Coil 2 Control Circuit High Voltage

What are the Possible Causes of the DTC P2304 Chevrolet?

  • Faulty Ignition Coil 2
  • Ignition Coil 2 harness is open or shorted
  • Ignition Coil 2 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P2304 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 P2304 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 P2304 Chevrolet code?

Need more information on how to fix the P2304 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2304 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

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 P2304 Chevrolet Code

1. What are the common symptoms of OBDII code P2304 in a Chevrolet related to Ignition Coil 2 Control Circuit High 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 P2304 in a Chevrolet indicating Ignition Coil 2 Control Circuit High Voltage?

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

3. How can I diagnose the issue causing OBDII code P2304 in a Chevrolet?

- The issue can be diagnosed using a scan tool to retrieve the code, checking the ignition coil, inspecting wiring and connectors for damage, and conducting a thorough visual inspection.

4. Can I drive my Chevrolet with OBDII code P2304 related to Ignition Coil 2 Control Circuit High Voltage?

- It is not recommended to drive your vehicle with this code as it can lead to further damage and potential safety hazards. It's best to address the issue promptly.

5. How can I repair OBDII code P2304 in a Chevrolet indicating Ignition Coil 2 Control Circuit High Voltage?

- Repair options include replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, and resetting the ECM after the repairs.

6. Will resetting the Check Engine Light resolve OBDII code P2304 in a Chevrolet?

- Resetting the light may temporarily turn it off, but the underlying issue causing the code will persist. It's essential to diagnose and repair the problem to prevent further issues.

7. How much does it typically cost to repair OBDII code P2304 related to Ignition Coil 2 Control Circuit High Voltage in a Chevrolet?

- The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced. It's advisable to consult a mechanic for an accurate estimate.

8. Can a DIY enthusiast fix OBDII code P2304 in a Chevrolet by themselves?

- Depending on your skills and experience with automotive repairs, you may be able to address this issue yourself by following proper diagnostic procedures and utilizing the right tools.

9. What happens if OBDII code P2304 in a Chevrolet is ignored?

- Ignoring this code can lead to continued engine misfires, reduced fuel efficiency, potential damage to the catalytic converter, and ultimately more costly repairs down the line.

10. Is OBDII code P2304 in a Chevrolet a common issue?

- While this code may not be as common as some others, issues related to Ignition Coil 2 Control Circuit High Voltage can occur in Chevrolet vehicles and should be addressed promptly to avoid further complications.

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