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P0443 Nissan Code - EVAP Canister Purge Volume Control Solenoid Valve

Quick Answer

This system controls the flow rate of fuel vapor from the EVAP canister. Common causes include Faulty EVAP Canister Purge Volume Control Solenoid Valve, EVAP Canister Purge Volume Control Solenoid Valve harness is open or shorted, EVAP Canister Purge Volume Control Solenoid Valve circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0443 Nissan indicates EVAP Canister Purge Volume Control Solenoid Valve.
Common causes
Common causes include Faulty EVAP Canister Purge Volume Control Solenoid Valve, EVAP Canister Purge Volume Control Solenoid Valve harness is open or shorted, EVAP Canister Purge Volume Control Solenoid Valve circuit poor electrical connection.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
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Code Popularity 110,040
How popular is this code, among other codes? Medium
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Table of contents Created and updated by William Orellana on Jun 28, 2020
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Code P0443 Nissan Description

This system controls the flow rate of fuel vapor from the EVAP canister. The opening of the vapor by-pass passage in the EVAP canister purge volume control solenoid valve changes to control the flow rate. The EVAP canister purge volume control solenoid valve repeats ON/OFF operation according to the signal sent from the Engine Control Module (ECM). The opening of the valve varies for optimum engine control. The optimum value stored in the ECM is determined by considering various engine conditions. When the engine is operating, the flow rate of fuel vapor from the EVAP canister is regulated as the airflow changes.
The EVAP canister purge volume control solenoid valve uses an ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the ECM. The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.
The Diagnostic Trouble Code (DTC) will set when the canister purge flow is detected during the specified driving conditions, even when the EVAP canister purge volume control solenoid valve is completely closed.
OBDII Code P0443 Nissan - EVAP Canister Purge Volume Control Solenoid Valve - AutoCodes.com
P0443 Nissan Code - EVAP Canister Purge Volume Control Solenoid Valve
What does this mean?

What are the Possible Causes of the DTC P0443 Nissan?

  • Faulty EVAP Canister Purge Volume Control Solenoid Valve
  • EVAP Canister Purge Volume Control Solenoid Valve harness is open or shorted
  • EVAP Canister Purge Volume Control Solenoid Valve circuit poor electrical connection
  • Faulty EVAP Control System Pressure Sensor

How to Fix the DTC P0443 Nissan?

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

It's a very common problem with Nissan vehicles. If the harness is not damaged, it's very likely that the problem is the canister purge volume control solenoid valve.

There is a factory service bulletin for the following Nissan models:
2008 Nissan Maxima
2008 Nissan Pathfinder
2008 Nissan Xterra
2008 Nissan Frontier
2008 Nissan Quest
Nissan Factory Service Bulletin OBDII Code P0443

The service bulletin recommends reprogramming the Engine Control Module (ECM) to repair the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0443 Nissan 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 P0443 Nissan code?

Need more information on how to fix the P0443 Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0443 Nissan code diagnosed by a professional: Find a repair shop in your area

Information for Specific Nissan Models

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 P0443 Nissan Code

1. What does the OBDII code P0443 for Nissan indicate?

The code P0443 in a Nissan vehicle points to a problem with the EVAP Canister Purge Volume Control Solenoid Valve.

2. What are the common symptoms of a P0443 error code in a Nissan?

Common symptoms of a P0443 code in a Nissan include rough idling, decreased fuel efficiency, and the illumination of the check engine light.

3. What are the possible causes of the P0443 code in a Nissan?

Common causes of a P0443 code in a Nissan include a faulty EVAP Canister Purge Volume Control Solenoid Valve, damaged wiring or connectors, or a vacuum leak in the EVAP system.

4. How can I diagnose a P0443 code in my Nissan?

To diagnose a P0443 code in a Nissan, you can use an OBDII scanner to retrieve the specific code, visually inspect the EVAP system components for any visible damage, and test the EVAP Canister Purge Volume Control Solenoid Valve for proper function.

5. How can I repair a P0443 code in my Nissan?

Repairing a P0443 code in a Nissan may involve replacing the EVAP Canister Purge Volume Control Solenoid Valve, repairing or replacing damaged wiring or connectors, and ensuring a proper seal in the EVAP system.

6. Can a P0443 code in a Nissan cause any long-term damage if left unaddressed?

If left unaddressed, a P0443 code in a Nissan can lead to increased emissions, reduced fuel efficiency, and potential damage to other components of the EVAP system.

7. Is it safe to continue driving my Nissan with a P0443 error code?

While it may be safe to drive your Nissan with a P0443 code in the short term, it is advisable to address the issue promptly to prevent any potential long-term damage and ensure optimal vehicle performance.

8. How much does it typically cost to repair a P0443 code in a Nissan?

The cost of repairing a P0443 code in a Nissan can vary depending on the extent of the issue, the labor rates in your area, and the cost of parts. It is recommended to consult with a professional mechanic for an accurate estimate.

9. Can I reset the check engine light after fixing a P0443 code in my Nissan?

Once the underlying issue causing the P0443 code in your Nissan has been addressed and repaired, you can reset the check engine light using an OBDII scanner to clear the error code and turn off the light.

10. How often does the EVAP Canister Purge Volume Control Solenoid Valve need to be replaced in a Nissan?

The EVAP Canister Purge Volume Control Solenoid Valve in a Nissan typically does not have a specific replacement interval and should be replaced as needed when a fault is detected. Regular maintenance and inspection of the EVAP system can help prevent issues.

Discuss the causes and fixes for P0443 Nissan OBDII Code

Submit a New Comment

  • I gave 12v current to solenoid switch on valve box... then
    my excavator bucket is work speedily... I want to move excavator bucket lower
    speed to high speed from volume controller. ( didn’t work solenoid switch in 9v)
    so that can’t control with voltage.  How
    can I do?

    Reply to Comment

  • stand to the front of the car look down there are to vacuam /solenoid valves that have electrical plugs they are mounted to a metral bracket with a nut on the front side. take both of them off the car. run a hot positive wire and a ground wire to your battery to check each one. if there good they will click, if not they don't click and they are bad. replace them and erase your code it should stay out and solve your problem with the check engine light

    Reply to Comment

  • these also have vacuam lines hooked to them so be carefull not to break the line or plastic on the valves

    Reply to Comment
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