AutoCodes – Chevrolet – P2304 2015 Chevrolet Silverado

P2304 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado 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.

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Code Popularity 214

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 P2304 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado - Ignition Coil 2 Control Circuit High Voltage - AutoCodes.com — P2304 2015 Chevrolet Silverado Code - Ignition Coil 2 Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2304 2015 Chevrolet Silverado?

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 2015 Chevrolet Silverado?

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 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado code?

Need more information on how to fix the P2304 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P2304 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2304 in a 2015 Chevrolet Silverado?

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

2. What does OBDII code P2304 "Ignition Coil 2 Control Circuit High Voltage" mean for a 2015 Chevrolet Silverado?

- This code indicates that the powertrain control module (PCM) has detected a high voltage condition in the ignition coil 2 control circuit.

3. What are the possible causes of OBDII code P2304 in a 2015 Chevrolet Silverado?

- Possible causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a defective PCM, or a problem with the ignition system.

4. How can I diagnose and repair OBDII code P2304 in my 2015 Chevrolet Silverado?

- Diagnose by inspecting the ignition coil, checking for damaged wiring, and testing the PCM. Repair involves replacing the faulty ignition coil, repairing wiring issues, or replacing the PCM if necessary.

5. Can driving with OBDII code P2304 in a 2015 Chevrolet Silverado cause further damage?

- Continued driving with this code may lead to further engine performance issues, increased fuel consumption, and potential damage to other components like the catalytic converter.

6. Is it safe to continue driving my 2015 Chevrolet Silverado with OBDII code P2304 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to poor engine performance and potential further damage if left unresolved.

7. How much does it typically cost to repair OBDII code P2304 in a 2015 Chevrolet Silverado?

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

8. Can I reset the Check Engine Light after repairing OBDII code P2304 in my 2015 Chevrolet Silverado?

- Yes, after repairing the underlying issue causing the code, the Check Engine Light can be reset using an OBDII scanner or by disconnecting the battery for a short period.

9. Are there any preventative maintenance steps to avoid OBDII code P2304 in a 2015 Chevrolet Silverado?

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

10. How long does it take to repair OBDII code P2304 in a 2015 Chevrolet Silverado?

- The repair time can vary based on the specific cause of the code and the expertise of the technician, but it may take anywhere from 30 minutes to a few hours to complete the repair.