AutoCodes – Honda – P0302 2020 Honda CR-V

P0302 2020 Honda CR-V Code - No. 2 Cylinder Misfire Detected

Quick Answer

The crankshaft vibrates slightly when each cylinder fires. Common causes include Valve adjustment, Faulty spark plug #2, Faulty ignition coil #2. 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: P0302 2020 Honda CR-V indicates No. 2 Cylinder Misfire Detected.
Common causes: Common causes include Valve adjustment, Faulty spark plug #2, Faulty ignition coil #2.
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 344

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 P0302 2020 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 P0302 2020 Honda CR-V - No. 2 Cylinder Misfire Detected - AutoCodes.com — P0302 2020 Honda CR-V Code - No. 2 Cylinder Misfire Detected

What does this mean?

What are the Possible Causes of the DTC P0302 2020 Honda CR-V?

Valve adjustment
Faulty spark plug #2
Faulty ignition coil #2
Clogged or faulty fuel injector #2
Intake air leak
Insufficient cylinder #2 compression
Incorrect fuel pressure

How to Fix the DTC P0302 2020 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 P0302 code means that cylinder #2 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 #2. 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 P0302 2020 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 P0302 2020 Honda CR-V code?

Need more information on how to fix the P0302 2020 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 P0302 2020 Honda CR-V Code

1. What does OBDII code P0302 on my 2020 Honda CR-V mean?

This code indicates a misfire in the No. 2 cylinder of your engine.

2. What are the common symptoms of a No. 2 cylinder misfire in a 2020 Honda CR-V?

Common symptoms include rough idling, loss of power, engine vibration, and a noticeable decrease in fuel efficiency.

3. What are the possible causes of a P0302 code in a 2020 Honda CR-V?

Potential causes may include faulty spark plugs, a malfunctioning ignition coil, clogged fuel injector, vacuum leak, or low compression in the No. 2 cylinder.

4. How can I diagnose the source of the No. 2 cylinder misfire in my 2020 Honda CR-V?

Diagnostic steps may involve checking the spark plugs, inspecting the ignition coil, testing the fuel injector, conducting a compression test, and scanning for any other related codes.

5. Can driving with a P0302 code on my 2020 Honda CR-V cause further damage?

Continuing to drive with a misfire can potentially damage the catalytic converter, so it's recommended to address the issue promptly.

6. How can I repair a No. 2 cylinder misfire in my 2020 Honda CR-V?

Repair steps may include replacing the spark plugs, ignition coil, fuel injector, addressing any vacuum leaks, performing a carbon cleaning, or repairing any compression issues.

7. Is it safe to continue driving my 2020 Honda CR-V with a P0302 code?

While the vehicle may still be operable with a misfire, it's best to avoid driving long distances and seek repair as soon as possible to prevent further damage.

8. How much does it typically cost to fix a No. 2 cylinder misfire in a 2020 Honda CR-V?

The cost of repairs can vary depending on the specific cause of the misfire and the labor rates of your chosen repair shop, but it could range from a few hundred to over a thousand dollars.

9. Can I clear the P0302 code on my 2020 Honda CR-V by simply resetting the check engine light?

Resetting the check engine light may temporarily clear the code, but if the underlying issue causing the misfire is not addressed, the code is likely to return.

10. How often should I perform maintenance to prevent a No. 2 cylinder misfire in my 2020 Honda CR-V?

Regular maintenance, including timely spark plug replacements, fuel system cleanings, and engine tune-ups, can help prevent misfires and keep your vehicle running smoothly.