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Engine-Codes – Honda – P0351 Honda

P0351 Honda Code - No. 1 Cylinder Ignition Coil Circuit Malfunction

Quick Answer

The P0351 code for Honda vehicles specifically indicates a problem with the No. Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Issues with the Engine Control Module (ECM). 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 Honda indicates No. 1 Cylinder Ignition Coil Circuit Malfunction.
Common causes
Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Issues with the Engine Control Module (ECM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P0351 Honda Description

The P0351 code for Honda vehicles specifically indicates a problem with the No. 1 Cylinder Ignition Coil Circuit. This means that there is a malfunction in the circuit that is responsible for delivering power to the ignition coil for the first cylinder in the engine. The ignition coil is a crucial component in the ignition system, as it is responsible for converting the low voltage from the battery into the high voltage needed to ignite the air-fuel mixture in the combustion chamber. When the ignition coil circuit malfunctions, it can lead to misfires, rough idling, decreased fuel efficiency, and ultimately, engine performance issues.

OBDII Code P0351 Honda - No. 1 Cylinder Ignition Coil Circuit Malfunction
P0351 Honda Code - No. 1 Cylinder Ignition Coil Circuit Malfunction

Common Causes of P0351 Honda

  1. Faulty ignition coil
  2. Damaged wiring or connectors in the ignition coil circuit
  3. Issues with the Engine Control Module (ECM)
  4. Spark plug issues
  5. Carbon buildup on the spark plugs

Symptoms of P0351 Honda

  1. Engine misfires or rough idling
  2. Decreased fuel efficiency
  3. Loss of power or acceleration
  4. Illuminated check engine light
  5. Engine stalling or difficulty starting

How to Fix P0351 Honda

  1. Diagnose the specific cause of the issue using a scan tool to pinpoint the problem with the No. 1 Cylinder Ignition Coil Circuit.
  2. Inspect the ignition coil, wiring, and connectors for any signs of damage or corrosion.
  3. Test the ignition coil resistance and check for proper voltage output.
  4. Replace the faulty ignition coil if necessary and ensure all connections are secure.
  5. Clear the diagnostic trouble codes and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P0351 Honda

The typical repair costs for addressing a P0351 code on a Honda vehicle can vary depending on the specific cause of the issue. On average, the cost of replacing an ignition coil can range from $100 to $300, including parts and labor. Additional costs may apply if there are other components that need to be replaced or if further diagnosis is required. It's important to keep in mind that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your location and vehicle model.

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Information for Specific Honda Models

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 Honda Code

1. What are the common symptoms of OBDII code P0351 in a Honda?

The common symptoms of OBDII code P0351 in a Honda include engine misfires, rough idling, loss of power, and illuminated Check Engine Light.

2. What does the OBDII code P0351 for "No. 1 Cylinder Ignition Coil Circuit Malfunction" indicate in a Honda?

OBDII code P0351 in a Honda indicates a malfunction in the ignition coil circuit of the No. 1 cylinder, leading to potential ignition system issues.

3. What are the possible causes of OBDII code P0351 in a Honda?

The possible causes of OBDII code P0351 in a Honda 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 OBDII code P0351 in my Honda?

To diagnose OBDII code P0351 in your Honda, you can use an OBDII scanner to read the code, inspect the ignition coil and its connections, check for damaged wiring, and perform a resistance test on the coil.

5. Can I still drive my Honda with OBDII code P0351 active?

It is not recommended to drive your Honda with OBDII code P0351 active, as it can lead to further engine damage and decreased performance. It's best to address the issue promptly.

6. What are the repair options for OBDII code P0351 in a Honda?

Repair options for OBDII code P0351 in a Honda include replacing the faulty ignition coil, repairing damaged wiring or connectors, resetting the ECM, and clearing the trouble code.

7. Is it possible to reset the OBDII code P0351 in a Honda without fixing the issue?

While you can clear the OBDII code P0351 in a Honda without fixing the underlying problem, it's not recommended, as the issue will persist and potentially worsen over time.

8. How much does it cost to repair OBDII code P0351 in a Honda?

The cost to repair OBDII code P0351 in a Honda can vary depending on the exact cause of the issue, but it typically ranges from $100 to $300 for parts and labor.

9. Can a DIY enthusiast fix OBDII code P0351 in a Honda?

A DIY enthusiast with automotive repair experience can potentially fix OBDII code P0351 in a Honda by following service manuals, using proper tools, and ensuring safety precautions are taken.

10. How often does OBDII code P0351 occur in Honda vehicles?

OBDII code P0351, indicating a No. 1 Cylinder Ignition Coil Circuit Malfunction, can occur in Honda vehicles, especially in older models or those with high mileage, due to wear and tear on ignition system components.

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