AutoCodes – Honda – P0354 2021 Honda CR-V

P0354 2021 Honda CR-V Code - No. 4 Cylinder Ignition Coil Circuit Malfunction

Quick Answer

The ignition coil is a part of the engine ignition system. Common causes include Faulty No, 4 Ignition Coil, No. 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
P0354 2021 Honda CR-V indicates No. 4 Cylinder Ignition Coil Circuit Malfunction.
Common causes
Common causes include Faulty No, 4 Ignition Coil, No.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 201
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 17, 2023
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Code P0354 2021 Honda CR-V Description

The ignition coil is a part of the engine ignition system. It converts low voltage from the battery into high voltage needed to create a spark in the spark plugs. The ignition coil is triggered at the optimum time by the Powertrain Control Module (PCM) ON/OFF command. The PCM detects a malfunction when the engine is running and the return signal does not change for a specified time, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).
OBDII Code P0354 2021 Honda CR-V - No. 4 Cylinder Ignition Coil Circuit Malfunction - AutoCodes.com
P0354 2021 Honda CR-V Code - No. 4 Cylinder Ignition Coil Circuit Malfunction

What are the Possible Causes of the DTC P0354 2021 Honda CR-V?

  • Faulty No. 4 Ignition Coil
  • No. 4 Ignition Coil harness is open or shorted
  • No. 4 Ignition Coil circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0354 2021 Honda CR-V?

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 P0354 2021 Honda CR-V 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 P0354 2021 Honda CR-V code?

Need more information on how to fix the P0354 2021 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0354 2021 Honda CR-V code diagnosed by a professional: Find a repair shop in your area

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 P0354 2021 Honda CR-V Code

1. What does the OBDII code P0354 mean on a 2021 Honda CR-V?

P0354 indicates an issue with the ignition coil circuit for cylinder No. 4. The Powertrain Control Module (PCM) has detected a malfunction in its operation.

2. What are the symptoms of P0354 on a 2021 Honda CR-V?

Common symptoms include engine misfires, rough idling, poor acceleration, reduced fuel efficiency, and the Check Engine Light turning on.

3. What causes the P0354 code to appear on a 2021 Honda CR-V?

Possible causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a bad spark plug, or a malfunctioning PCM.

4. Can you drive a 2021 Honda CR-V with a P0354 code?

Driving with a P0354 code is not recommended, as it can cause further engine damage, reduced performance, and increased emissions.

5. How do you diagnose a P0354 code on a 2021 Honda CR-V?

Diagnosis involves inspecting the No. 4 ignition coil, checking the wiring and connectors for damage, testing the spark plug in cylinder No. 4, and using a multimeter to test circuit continuity.

6. How is the P0354 code fixed on a 2021 Honda CR-V?

Repairs may include replacing the faulty ignition coil, repairing damaged wiring or connectors, replacing the spark plug, or reprogramming or replacing the PCM if needed.

7. What tools are needed to troubleshoot a P0354 code on a 2021 Honda CR-V?

Common tools include an OBDII scanner, a multimeter for electrical testing, and basic hand tools to access and inspect ignition components.

8. How much does it cost to fix a P0354 code on a 2021 Honda CR-V?

Repair costs can vary, but replacing an ignition coil typically costs between $150 and $300, depending on labor rates and part prices.

9. Can a bad spark plug cause the P0354 code on a 2021 Honda CR-V?

Yes, a bad spark plug in cylinder No. 4 can lead to ignition coil circuit issues and trigger the P0354 code.

10. Will clearing the P0354 code fix the problem on a 2021 Honda CR-V?

Clearing the code without addressing the root cause will not fix the problem. The code will likely return if the issue is not properly resolved.

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