P0351 2021 Honda CR-V Code - No. 1 Cylinder Ignition Coil Circuit Malfunction
Quick Answer
The P0351 diagnostic trouble code (DTC) for a 2021 Honda CR-V indicates a No. Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Malfunctioning PCM. 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 2021 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, Malfunctioning PCM.
- 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 P0351 2021 Honda CR-V Description
The P0351 diagnostic trouble code (DTC) for a 2021 Honda CR-V indicates a No. 1 Cylinder Ignition Coil Circuit Malfunction. This means that the powertrain control module (PCM) has detected an issue with the ignition coil in the No. 1 cylinder, which is responsible for creating the spark needed to ignite the air-fuel mixture in the combustion chamber. The ignition coil receives signals from the PCM to generate the high voltage needed for spark plug ignition.
Common Causes of P0351 2021 Honda CR-V
- Faulty ignition coil
- Damaged wiring or connectors in the ignition coil circuit
- Malfunctioning PCM
- Worn-out spark plugs
- Defective spark plug wires
Symptoms of P0351 2021 Honda CR-V
- Engine misfires
- Rough idling or vibrations
- Decreased fuel efficiency
- Engine stalling
- Illuminated check engine light
How to Fix P0351 2021 Honda CR-V
- Diagnose the issue using a scan tool to confirm the P0351 code and identify the specific cylinder affected.
- Inspect the ignition coil, wiring, and connectors for any signs of damage or wear.
- Test the ignition coil's resistance and check for proper voltage output.
- Replace the faulty ignition coil if necessary, ensuring proper installation and connection.
- Clear the DTC and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P0351 2021 Honda CR-V
The typical repair costs for addressing a No. 1 Cylinder Ignition Coil Circuit Malfunction can range from $100 to $300, including parts and labor. However, it's important to note that 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. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to check local rates for a more precise estimate.
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Frequently Asked Questions about P0351 2021 Honda CR-V Code
What does the OBDII code P0351 mean on a 2021 Honda CR-V?
P0351 indicates a malfunction in the ignition coil circuit for cylinder 1, meaning the ECU has detected an issue with the signal sent to or from the ignition coil.
What are the symptoms of code P0351 in a 2021 Honda CR-V?
Common symptoms include engine misfires, rough idling, reduced power, poor fuel efficiency, and possibly an illuminated Check Engine Light.
What causes the P0351 code to appear?
Possible causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a malfunctioning ECU, or issues with the spark plug in cylinder 1.
Can I drive my 2021 Honda CR-V with a P0351 code?
Driving with a P0351 code is not recommended, as it can lead to engine misfires, reduced performance, and potential damage to the catalytic converter if left unresolved.
How do I diagnose the P0351 code?
Start by inspecting the ignition coil, spark plug, and wiring for damage or wear. Use a multimeter to test the ignition coil and wiring continuity, and consider swapping the coil with another cylinder to see if the issue moves.
How do I fix the P0351 code?
Repairs may include replacing the ignition coil or spark plug for cylinder 1, repairing damaged wiring or connectors, or, in rare cases, replacing the ECU.
How much does it cost to fix code P0351 on a 2021 Honda CR-V?
Repair costs can vary but typically range from $100 to $300 for parts and labor, depending on whether the ignition coil, spark plug, or wiring needs replacement.
Can a dirty spark plug cause the P0351 code?
Yes, a dirty or worn spark plug in cylinder 1 can cause ignition issues, potentially triggering the P0351 code.
Will clearing the P0351 code fix the problem?
Clearing the code will reset the Check Engine Light, but the underlying issue must be fixed to prevent the code from returning.
Is the P0351 code common in Honda CR-V models?
While not extremely common, ignition coil circuit malfunctions like P0351 can occur due to wear and tear or electrical issues, especially as the vehicle ages.
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