AutoCodes – Honda – P0351 2009 Honda Accord

P0351 2009 Honda Accord Code - Ignition Coil 1 Circuit Malfunction

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 1, Ignition Coil 1 harness is open or shorted, Ignition Coil 1 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: P0351 2009 Honda Accord indicates Ignition Coil 1 Circuit Malfunction.
Common causes: Common causes include Faulty Ignition Coil 1, Ignition Coil 1 harness is open or shorted, Ignition Coil 1 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 7,669

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0351 2009 Honda Accord Description

The ignition system on the vehicle uses individual ignition coils for each cylinder. The Engine Control Module (ECM) controls each ignition coil operation. The ECM sends a ON/OFF signal to energize the ignition coil to create a spark at the spark plug when a spark is required at the cylinder.

OBDII Code P0351 2009 Honda Accord - Ignition Coil 1 Circuit Malfunction - AutoCodes.com — P0351 2009 Honda Accord Code - Ignition Coil 1 Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0351 2009 Honda Accord?

Faulty Ignition Coil 1
Ignition Coil 1 harness is open or shorted
Ignition Coil 1 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0351 2009 Honda Accord?

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 P0351 2009 Honda Accord 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 P0351 2009 Honda Accord 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 P0351 2009 Honda Accord Code

1. What does the OBDII code P0351 mean on a 2009 Honda Accord?

The P0351 code indicates an ignition coil 1 circuit malfunction in the engine's ignition system.

2. What are common symptoms of the P0351 code on a 2009 Honda Accord?

Common symptoms include engine misfires, rough idling, loss of power, and illuminated check engine light.

3. What are the possible causes of the P0351 code on a 2009 Honda Accord?

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 can I diagnose the P0351 code on my 2009 Honda Accord?

Diagnosis typically involves inspecting the ignition coil, checking the wiring and connectors for damage, and using a scan tool to evaluate the circuit's performance.

5. Can I still drive my 2009 Honda Accord with the P0351 code?

It is not recommended to drive the vehicle with the P0351 code as it can lead to further engine damage and reduced performance.

6. How can I repair the P0351 code on my 2009 Honda Accord?

Repair options include replacing the faulty ignition coil, repairing damaged wiring or connectors, and resetting the ECM after the issue is resolved.

7. Is it necessary to replace all ignition coils if P0351 is detected on a 2009 Honda Accord?

It is not necessary to replace all ignition coils if only one is malfunctioning. However, it is recommended to inspect and possibly replace other coils if they are old or showing signs of wear.

8. Can a DIY enthusiast fix the P0351 code on a 2009 Honda Accord?

DIY enthusiasts with the necessary tools and knowledge can potentially fix the P0351 code by following repair guides and being careful with electrical components.

9. How much does it cost to repair the P0351 code on a 2009 Honda Accord?

The cost of repair can vary depending on the root cause of the issue, but it typically ranges from $100 to $300 for parts and labor.

10. What should I do if the P0351 code keeps coming back on my 2009 Honda Accord?

If the code persists after repair, it is advisable to recheck the ignition coil, wiring, and connectors for any missed issues and possibly seek assistance from a professional mechanic for further diagnosis.