AutoCodes – Suzuki – P2304 Suzuki

P2304 Suzuki Code - Ignition Coil 2 Primary Control Circuit High

Quick Answer

The current flow, or dwell, through the primary ignition coil is controlled by the Powertrain Control Module (PCM) by providing a switched ground path through the ignition coil driver to ground. 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 Suzuki indicates Ignition Coil 2 Primary Control Circuit High.
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 2,781

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2304 Suzuki Description

The current flow, or dwell, through the primary ignition coil is controlled by the Powertrain Control Module (PCM) by providing a switched ground path through the ignition coil driver to ground. When the ignition coil driver is switched on, current rapidly builds up to a maximum value, determined by the coil inductance and resistance. When the current is switched off, the magnetic field collapses which induces a secondary high voltage surge and the spark plug is fired. This high voltage surge creates a flyback voltage which the PCM uses as a feedback during the ignition diagnostics. The PCM continuously monitors the ignition system for concerns. The P2304 code sets when the PCM detects a short to voltage in the circuit.

OBDII Code P2304 Suzuki - Ignition Coil 2 Primary Control Circuit High - AutoCodes.com — P2304 Suzuki Code - Ignition Coil 2 Primary Control Circuit High

What does this mean?

What are the Possible Causes of the DTC P2304 Suzuki?

Faulty Ignition Coil 2
Ignition Coil 2 harness is open or shorted
Ignition Coil 2 circuit poor electrical connection

How to Fix the DTC P2304 Suzuki?

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 Suzuki 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 Suzuki code?

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

Need Help with the Code?

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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 Suzuki Code

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

- Common symptoms may 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 Suzuki indicating Ignition Coil 2 Primary Control Circuit High?

- Possible causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or issues with the engine control module.

3. How can I diagnose the source of OBDII code P2304 in my Suzuki suggesting Ignition Coil 2 Primary Control Circuit High?

- To diagnose the issue, you can use a scan tool to check for the specific code, visually inspect the wiring and connectors, test the ignition coil, and perform continuity checks.

4. Can I continue driving my Suzuki with OBDII code P2304 related to Ignition Coil 2 Primary Control Circuit High?

- It is not recommended to continue driving with this code as it can lead to further damage to the ignition system and potentially cause more serious issues.

5. How can I repair OBDII code P2304 in my Suzuki due to Ignition Coil 2 Primary Control Circuit High?

- Repair options may include replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, and resetting the fault code using a scan tool.

6. Are there any preventive maintenance tips to avoid OBDII code P2304 in a Suzuki related to Ignition Coil 2 Primary Control Circuit High?

- Regularly inspecting the ignition system components, ensuring proper maintenance of the vehicle's electrical system, and addressing any issues promptly can help prevent this code.

7. Will OBDII code P2304 in a Suzuki related to Ignition Coil 2 Primary Control Circuit High affect the vehicle's fuel economy?

- Yes, this code can impact fuel economy due to potential engine misfires and inefficient combustion caused by the faulty ignition coil.

8. Can weather conditions affect the likelihood of OBDII code P2304 in a Suzuki indicating Ignition Coil 2 Primary Control Circuit High?

- Extreme weather conditions such as excessive heat or moisture can potentially exacerbate issues with the ignition coil circuit and lead to this code.

9. Is it necessary to have a professional mechanic reset OBDII code P2304 in a Suzuki linked to Ignition Coil 2 Primary Control Circuit High?

- While a professional mechanic can reset the code, you can also do it yourself using a scan tool after addressing the root cause of the issue.

10. How long does it typically take to repair OBDII code P2304 in a Suzuki related to Ignition Coil 2 Primary Control Circuit High?

- The repair time can vary depending on the exact cause of the issue, but it may take anywhere from 30 minutes to a few hours to complete the necessary repairs.