AutoCodes – Nissan – P0443 2007 Nissan Maxima

P0443 2007 Nissan Maxima 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 2007 Nissan Maxima 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 4,936

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 28, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0443 2007 Nissan Maxima 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 2007 Nissan Maxima - EVAP Canister Purge Volume Control Solenoid Valve - AutoCodes.com — P0443 2007 Nissan Maxima Code - EVAP Canister Purge Volume Control Solenoid Valve

What does this mean?

What are the Possible Causes of the DTC P0443 2007 Nissan Maxima?

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 2007 Nissan Maxima?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0443 2007 Nissan Maxima 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 2007 Nissan Maxima 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 P0443 2007 Nissan Maxima Code

1. What does the OBDII code P0443 on a 2007 Nissan Maxima indicate?

The code P0443 specifically refers to a problem with the EVAP canister purge volume control solenoid valve in the vehicle's emission control system.

2. What are the common symptoms of a P0443 code in a 2007 Nissan Maxima?

Common symptoms include rough idling, decreased fuel efficiency, and the illumination of the Check Engine Light on the dashboard.

3. What are the possible causes of a P0443 code in a 2007 Nissan Maxima?

Potential causes include a faulty purge solenoid valve, damaged wiring or connectors in the EVAP system, or a vacuum leak in the system.

4. How can I diagnose a P0443 code in my 2007 Nissan Maxima?

Diagnosis typically involves using an OBDII scanner to retrieve the specific code, checking the purge solenoid valve for proper operation, and inspecting the EVAP system for any visible signs of damage.

5. Can a P0443 code in a 2007 Nissan Maxima cause any serious issues if left unaddressed?

While the vehicle may still be operable with this code present, ignoring it can lead to increased emissions, potential damage to other emission components, and failed emissions testing.

6. How can I repair a P0443 code in my 2007 Nissan Maxima?

Repair options may include replacing the purge solenoid valve, repairing or replacing damaged wiring or connectors, and ensuring the entire EVAP system is functioning correctly.

7. Are there any preventive measures to avoid encountering a P0443 code in a 2007 Nissan Maxima?

Regularly inspecting and maintaining the EVAP system, ensuring the gas cap is tightly sealed after refueling, and addressing any Check Engine Light codes promptly can help prevent issues.

8. Can I drive my 2007 Nissan Maxima with a P0443 code?

While it may be possible to drive the vehicle with this code present, it is recommended to address the underlying issue promptly to prevent potential damage and ensure optimal vehicle performance.

9. How much does it typically cost to repair a P0443 code in a 2007 Nissan Maxima?

The cost of repairs can vary depending on the specific cause of the code, but it may range from $100 to $300 for parts and labor.

10. Can I reset the Check Engine Light after fixing a P0443 code in my 2007 Nissan Maxima?

Yes, after repairing the issue causing the P0443 code, you can reset the Check Engine Light using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.