AutoCodes – Chevrolet – P2304 2018 Chevrolet Silverado

P2304 2018 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 2018 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 284

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 2018 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 2018 Chevrolet Silverado - Ignition Coil 2 Control Circuit High Voltage - AutoCodes.com — P2304 2018 Chevrolet Silverado Code - Ignition Coil 2 Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2304 2018 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 2018 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 2018 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 2018 Chevrolet Silverado code?

Need more information on how to fix the P2304 2018 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 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2304 in a 2018 Chevrolet Silverado?

The common symptoms of OBDII code P2304 include engine misfires, rough idling, loss of power, and illuminated Check Engine Light.

2. What does the OBDII code P2304 on a 2018 Chevrolet Silverado indicate?

OBDII code P2304 indicates a problem with the Ignition Coil 2 Control Circuit High Voltage in the ignition system of the vehicle.

3. What are the possible causes of OBDII code P2304 in a 2018 Chevrolet Silverado?

Possible causes of OBDII code P2304 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 issue causing OBDII code P2304 in my 2018 Chevrolet Silverado?

To diagnose the issue causing OBDII code P2304, you can perform a visual inspection of the ignition coil and its wiring, use a multimeter to check for continuity and resistance in the circuit, and conduct a scan tool diagnostic to pinpoint the exact cause.

5. Is it safe to continue driving my 2018 Chevrolet Silverado with OBDII code P2304?

It is not recommended to continue driving your vehicle with OBDII code P2304, as it can lead to further damage to the engine and other components. It is best to address the issue promptly.

6. Can I repair OBDII code P2304 in my 2018 Chevrolet Silverado myself?

Depending on your experience and tools available, you may be able to repair OBDII code P2304 yourself by replacing the faulty ignition coil, repairing damaged wiring, or addressing any other identified issues in the circuit.

7. What are the typical repair costs associated with fixing OBDII code P2304 in a 2018 Chevrolet Silverado?

The repair costs for OBDII code P2304 can vary depending on the exact cause of the issue. Replacing an ignition coil can cost between $100 to $300, while professional diagnostic and repair services may add to the total cost.

8. How urgent is it to address OBDII code P2304 in my 2018 Chevrolet Silverado?

It is advisable to address OBDII code P2304 as soon as possible to prevent further damage to the vehicle and ensure optimal engine performance. Ignoring the issue can lead to more severe problems over time.

9. Can a faulty ignition coil cause other OBDII codes besides P2304 in a 2018 Chevrolet Silverado?

Yes, a faulty ignition coil can cause a range of other OBDII codes related to misfires, ignition system malfunctions, and engine performance issues in a 2018 Chevrolet Silverado.

10. How can I prevent OBDII code P2304 from recurring in my 2018 Chevrolet Silverado?

To prevent OBDII code P2304 from recurring, it's essential to perform regular maintenance on your vehicle, including checking and replacing ignition components as needed, ensuring proper wiring connections, and addressing any related issues promptly.