AutoCodes – Chevrolet – P2304 2016 Chevrolet Silverado

P2304 2016 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 2016 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 236

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 2016 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 2016 Chevrolet Silverado - Ignition Coil 2 Control Circuit High Voltage - AutoCodes.com — P2304 2016 Chevrolet Silverado Code - Ignition Coil 2 Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2304 2016 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 2016 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 2016 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 2016 Chevrolet Silverado code?

Need more information on how to fix the P2304 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2304 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 2016 Chevrolet Silverado Code

1. What are common symptoms of OBDII code P2304 in a 2016 Chevrolet Silverado?

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

2. What does the OBDII code P2304 "Ignition Coil 2 Control Circuit High Voltage" mean for a 2016 Chevrolet Silverado?

- This code indicates a high voltage condition in the control circuit of ignition coil 2 in the vehicle's engine.

3. What are possible causes of OBDII code P2304 in a 2016 Chevrolet Silverado?

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

4. How serious is OBDII code P2304 in a 2016 Chevrolet Silverado?

- Ignoring this code can lead to reduced engine performance, increased fuel consumption, and potential damage to the catalytic converter. It is recommended to address this issue promptly.

5. Can I continue driving my 2016 Chevrolet Silverado with OBDII code P2304?

- It is not advisable to continue driving the vehicle with this code present, as it can lead to further damage to the engine and emission system. It is recommended to have the issue diagnosed and repaired as soon as possible.

6. How can I diagnose OBDII code P2304 in a 2016 Chevrolet Silverado?

- Diagnosing this code typically involves checking the ignition coil, inspecting the wiring and connectors in the control circuit, and testing the ECM for proper functioning.

7. What are some repair tips for fixing OBDII code P2304 in a 2016 Chevrolet Silverado?

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

8. Can I repair OBDII code P2304 in a 2016 Chevrolet Silverado myself?

- Depending on your automotive knowledge and skills, you may be able to address this code yourself by following repair guides or seeking assistance from a professional mechanic for more complex repairs.

9. How much does it cost to fix OBDII code P2304 in a 2016 Chevrolet Silverado?

- The cost of repairing this code can vary based on the specific cause of the issue, parts needed for replacement, and labor charges. It is recommended to obtain quotes from local repair shops for an accurate estimate.

10. Will resetting the Check Engine Light resolve OBDII code P2304 in a 2016 Chevrolet Silverado?

- While resetting the Check Engine Light may temporarily turn it off, the underlying issue causing the code will still persist. It is essential to diagnose and fix the root cause to prevent further problems.