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Engine-Codes – Honda – P0351 2018 Honda CR-V

P0351 2018 Honda CR-V Code - No. 1 Cylinder Ignition Coil Circuit Malfunction

Quick Answer

The P0351 code for a 2018 Honda CR-V indicates a 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 2018 Honda CR-V 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 13, 2024
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Code P0351 2018 Honda CR-V Description

The P0351 code for a 2018 Honda CR-V indicates a No. 1 Cylinder Ignition Coil Circuit Malfunction. This means that there is an issue with the ignition coil in the first cylinder of the engine. The ignition coil is responsible for converting the low voltage from the battery into the high voltage needed to create a spark in the spark plugs, which ignites the air-fuel mixture in the combustion chamber. When the ignition coil circuit malfunctions, it can lead to misfires, rough idling, poor fuel economy, and even engine stalling.

OBDII Code P0351 2018 Honda CR-V - No. 1 Cylinder Ignition Coil Circuit Malfunction
P0351 2018 Honda CR-V Code - No. 1 Cylinder Ignition Coil Circuit Malfunction

Common Causes of P0351 2018 Honda CR-V

  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 spark plugs

Symptoms of P0351 2018 Honda CR-V

  1. Engine misfires
  2. Rough idling or shaking while the engine is running
  3. Decreased fuel efficiency
  4. Engine stalling
  5. Illumination of the check engine light

How to Fix P0351 2018 Honda CR-V

  1. Diagnose the specific cause of the issue by using a scan tool to read the code and perform further testing on the ignition coil, wiring, and connectors.
  2. Replace the faulty ignition coil in the No. 1 cylinder.
  3. Inspect and repair any damaged wiring or connectors in the ignition coil circuit.
  4. Clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.
  5. If necessary, replace the spark plugs and perform a tune-up to ensure optimal engine performance.

Cost to Fix P0351 2018 Honda CR-V

The typical repair costs for a No. 1 Cylinder Ignition Coil Circuit Malfunction can range from $150 to $350, including parts and labor. However, specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

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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 2018 Honda CR-V Code

1. What are the common symptoms of OBDII code P0351 (No. 1 Cylinder Ignition Coil Circuit Malfunction) in a 2018 Honda CR-V?

The common symptoms of P0351 in a 2018 Honda CR-V include engine misfires, rough idling, loss of power, and in some cases, the Check Engine light illuminating.

2. What are the possible causes of OBDII code P0351 in a 2018 Honda CR-V?

The possible causes of code P0351 in a 2018 Honda CR-V may include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or issues with the Engine Control Module (ECM).

3. How can I diagnose the No. 1 Cylinder Ignition Coil Circuit Malfunction in my 2018 Honda CR-V?

To diagnose P0351, you can use a code reader to retrieve the specific trouble code, visually inspect the ignition coil and its connections, test the ignition coil's resistance, and check for any damaged wiring or connectors in the circuit.

4. Can I still drive my 2018 Honda CR-V with OBDII code P0351 active?

It is not recommended to drive your 2018 Honda CR-V with code P0351 active, as it can lead to further damage to the engine and other components. It is advisable to address the issue promptly.

5. How do I repair OBDII code P0351 in my 2018 Honda CR-V?

To repair code P0351, you may need to replace the faulty ignition coil, repair or replace damaged wiring or connectors, and clear the trouble codes from the ECM using a code reader.

6. Will resetting the Check Engine light resolve OBDII code P0351 in a 2018 Honda CR-V?

Simply resetting the Check Engine light will not resolve the underlying issue causing P0351. It is essential to diagnose the problem, address the root cause, and clear the trouble codes after making necessary repairs.

7. Are there any preventative measures to avoid OBDII code P0351 in a 2018 Honda CR-V?

Regularly maintaining your vehicle, including scheduled spark plug and ignition system inspections, can help prevent issues like P0351. Timely replacement of worn-out ignition components can also aid in preventing this code.

8. Can extreme weather conditions affect the occurrence of OBDII code P0351 in a 2018 Honda CR-V?

Extreme weather conditions, especially excessive heat or moisture, can potentially impact the ignition system and lead to issues like code P0351. It is important to keep your vehicle well-maintained in all weather conditions.

9. Is it possible for a DIY enthusiast to fix OBDII code P0351 in a 2018 Honda CR-V?

Depending on your skill level and access to tools, a DIY enthusiast may be able to address code P0351 by following repair guides, replacing the ignition coil, checking wiring connections, and clearing the trouble codes.

10. How long can I safely wait before addressing OBDII code P0351 in my 2018 Honda CR-V?

It is recommended not to delay addressing P0351 in your 2018 Honda CR-V, as driving with this code active can lead to performance issues and potential damage to the engine. It is best to address the problem promptly.

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