AutoCodes – Honda – P0301 2019 Honda CR-V

P0301 2019 Honda CR-V Code - No. 1 Cylinder Misfire Detected

Quick Answer

The crankshaft vibrates slightly when each cylinder fires. Common causes include Valve adjustment, Faulty spark plug #1, Faulty ignition coil #1. 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: P0301 2019 Honda CR-V indicates No. 1 Cylinder Misfire Detected.
Common causes: Common causes include Valve adjustment, Faulty spark plug #1, Faulty ignition coil #1.
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 475

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 16, 2023

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0301 2019 Honda CR-V Description

The crankshaft vibrates slightly when each cylinder fires. If a misfire occurs, the crankshaft rotation speed changes rapidly. The Powertrain Control Module (PCM) monitors the crankshaft rotation speed based on the output pulses from the Crankshaft Position (CKP) Sensor. By monitoring changes in the crankshaft rotation speed, the PCM counts the number of misfires and determines which cylinder is misfiring. If a misfire is detected, a Diagnostic Trouble Code (DTC) is stored.
There are two types of misfire detection: Type 1: When the number of misfires per 200 engine revolutions reaches the level that can damage the three-way catalyst (TWC), a DTC is stored and the MIL blinks. Type 2: When the number of misfires per 1,000 engine revolutions reaches the level that affects exhaust emissions but is not severe enough to immediately damage the catalyst, a DTC is stored, and the MIL comes on.

OBDII Code P0301 2019 Honda CR-V - No. 1 Cylinder Misfire Detected - AutoCodes.com — P0301 2019 Honda CR-V Code - No. 1 Cylinder Misfire Detected

What does this mean?

What are the Possible Causes of the DTC P0301 2019 Honda CR-V?

Valve adjustment
Faulty spark plug #1
Faulty ignition coil #1
Clogged or faulty fuel injector #1
Intake air leak
Insufficient cylinder #1 compression
Incorrect fuel pressure

How to Fix the DTC P0301 2019 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 does this mean?

Code Tech Notes

The P0301 code means that cylinder #1 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #1. If the problem persists more tests need to be done to diagnose the problem, see "Possible Causes".

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0301 2019 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 P0301 2019 Honda CR-V code?

Need more information on how to fix the P0301 2019 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the 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 P0301 2019 Honda CR-V Code

1. What does the OBDII code P0301 mean on a 2019 Honda CR-V?

P0301 indicates a misfire has been detected in cylinder 1 of the engine.

2. What are the common symptoms of a P0301 code on a 2019 Honda CR-V?

Symptoms may include a rough idle, reduced engine performance, poor fuel economy, engine hesitation, and the Check Engine Light illuminating.

3. What causes a P0301 code on a 2019 Honda CR-V?

Common causes include faulty spark plugs, a bad ignition coil, a clogged fuel injector, low cylinder compression, or vacuum leaks.

4. Can a dirty air filter cause a P0301 code on a 2019 Honda CR-V?

While unlikely, a severely clogged air filter can affect air-fuel mixture and contribute to misfires.

5. How do I fix the P0301 code on my 2019 Honda CR-V?

Repairs may involve replacing the spark plug or ignition coil in cylinder 1, cleaning or replacing the fuel injector, or addressing any vacuum leaks.

6. Is it safe to drive a 2019 Honda CR-V with a P0301 code?

Driving with a P0301 code is not recommended, as it can cause further engine damage or catalytic converter failure.

7. Can bad fuel cause a P0301 code on a 2019 Honda CR-V?

Yes, poor-quality or contaminated fuel can lead to incomplete combustion and misfires in the engine.

8. How much does it cost to repair a P0301 code on a 2019 Honda CR-V?

The cost depends on the cause, ranging from $100â€“$300 for a spark plug or ignition coil replacement to higher costs for more complex repairs.

9. Can a P0301 code cause long-term damage to a 2019 Honda CR-V?

Yes, prolonged misfiring can damage the catalytic converter, pistons, or other engine components.

10. How can I prevent a P0301 code on my 2019 Honda CR-V?

Regular maintenance, including timely spark plug replacements, using high-quality fuel, and addressing issues like vacuum leaks promptly, can help prevent cylinder misfires.