AutoCodes – Honda – P0303 2016 Honda CR-V

P0303 2016 Honda CR-V Code - No. 3 Cylinder Misfire Detected

Quick Answer

The crankshaft vibrates slightly when each cylinder fires. Common causes include Valve adjustment, Faulty spark plug #3, Faulty ignition coil #3. 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: P0303 2016 Honda CR-V indicates No. 3 Cylinder Misfire Detected.
Common causes: Common causes include Valve adjustment, Faulty spark plug #3, Faulty ignition coil #3.
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 325

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 P0303 2016 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 P0303 2016 Honda CR-V - No. 3 Cylinder Misfire Detected - AutoCodes.com — P0303 2016 Honda CR-V Code - No. 3 Cylinder Misfire Detected

What does this mean?

What are the Possible Causes of the DTC P0303 2016 Honda CR-V?

Valve adjustment
Faulty spark plug #3
Faulty ignition coil #3
Clogged or faulty fuel injector #3
Intake air leak
Insufficient cylinder #3 compression
Incorrect fuel pressure

How to Fix the DTC P0303 2016 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 P0303 code means that cylinder #3 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 #3. 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 P0303 2016 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 P0303 2016 Honda CR-V code?

Need more information on how to fix the P0303 2016 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 P0303 2016 Honda CR-V Code

1. What are common symptoms of OBDII code P0303 (No. 3 Cylinder Misfire Detected) in a 2016 Honda CR-V?

- Common symptoms include rough idling, loss of power, engine vibration, and potential increase in fuel consumption.

2. What are some possible causes of a P0303 code in a 2016 Honda CR-V?

- Potential causes include faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, wiring issues, or a problem with the engine's compression.

3. How can I diagnose the root cause of a No. 3 cylinder misfire in my 2016 Honda CR-V?

- Diagnosing the issue may involve inspecting and testing components such as spark plugs, ignition coils, fuel injectors, vacuum lines, and performing a compression test.

4. Can driving with a P0303 code in a 2016 Honda CR-V cause further damage?

- Continuing to drive with a misfire can potentially lead to damage to the catalytic converter, O2 sensors, or other engine components over time.

5. How can I repair a No. 3 cylinder misfire in my 2016 Honda CR-V?

- Repair steps may include replacing faulty spark plugs, ignition coils, or fuel injectors, fixing vacuum leaks, checking and repairing wiring issues, and ensuring proper engine compression.

6. Is it possible to clear the P0303 code in a 2016 Honda CR-V without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is recommended to address the root cause of the misfire to prevent further issues and potential damage.

7. Can bad fuel quality or old fuel trigger a No. 3 cylinder misfire in a 2016 Honda CR-V?

- Poor fuel quality or old fuel can potentially contribute to a misfire issue, but it is usually not the sole cause. It's essential to investigate other possible factors as well.

8. How often should I replace spark plugs in a 2016 Honda CR-V to prevent misfire issues?

- It is generally recommended to replace spark plugs every 30,000 to 100,000 miles, depending on the type of spark plugs used in the vehicle.

9. Will a P0303 code in a 2016 Honda CR-V reset itself after the issue is fixed?

- In some cases, the code may reset itself after a few successful drive cycles once the underlying problem causing the misfire has been resolved.

10. Can extreme weather conditions, such as very cold temperatures, trigger a No. 3 cylinder misfire in a 2016 Honda CR-V?

- Extreme weather conditions can potentially exacerbate existing issues that may lead to a misfire, such as ignition system problems or fuel delivery issues.