AutoCodes – Nissan – P0443 2008 Nissan Maxima

P0443 2008 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 2008 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.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 8,899

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0443 2008 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 2008 Nissan Maxima - EVAP Canister Purge Volume Control Solenoid Valve - AutoCodes.com — P0443 2008 Nissan Maxima Code - EVAP Canister Purge Volume Control Solenoid Valve

What does this mean?

What are the Possible Causes of the DTC P0443 2008 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 2008 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.

There is a factory service bulletin for the 2008 Nissan Maxima:
2008 Nissan Maxima 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 2008 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 2008 Nissan Maxima code?

Need more information on how to fix the P0443 2008 Nissan Maxima code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0443 2008 Nissan Maxima code diagnosed by a professional: Find a repair shop in your area

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 2008 Nissan Maxima Code

1. What does the OBDII code P0443 indicate on a 2008 Nissan Maxima?

The P0443 code indicates a malfunction in the EVAP canister purge volume control solenoid valve circuit, suggesting that the valve might be stuck open or closed due to electrical issues or faulty components.

2. What are the common symptoms of code P0443 in a 2008 Nissan Maxima?

Symptoms include a check engine light, a noticeable fuel odor, decreased fuel efficiency, and in some cases, rough idling.

3. What causes the P0443 code to appear on a 2008 Nissan Maxima?

Common causes include a faulty purge control solenoid, damaged purge valve wiring or connectors, or a leak in the EVAP system hoses.

4. How can I diagnose the P0443 code on my 2008 Nissan Maxima?

Diagnosis involves checking the purge valve operation with a vacuum pump, inspecting the electrical connections and wiring for damage, and testing the purge valve solenoid with a multimeter to ensure it operates correctly.

5. What repairs can fix the P0443 code in a 2008 Nissan Maxima?

Repairs may include replacing the purge volume control solenoid valve, repairing any damaged wiring or connectors, or replacing cracked or leaking hoses in the EVAP system.

6. Is it safe to drive my 2008 Nissan Maxima with the P0443 code?

While it may be safe to drive for a short period, ongoing driving with this issue can lead to increased emissions and potentially more serious issues like a damaged catalytic converter, making timely repair important.

7. Will ignoring the P0443 code affect my 2008 Nissan Maximaâ€™s performance?

Ignoring the code can lead to a drop in fuel efficiency, potentially more harmful emissions, and possible damage to the EVAP system or other components, negatively affecting the vehicle's overall performance.

8. How much does it typically cost to repair the P0443 code in a 2008 Nissan Maxima?

The cost can vary widely but generally falls between $150 and $300, depending on whether the issue is with the solenoid, wiring, or another component of the EVAP system. The cost of parts and labor will vary based on location and service provider.

9. Can a faulty gas cap cause the P0443 code on a 2008 Nissan Maxima?

While a faulty gas cap can cause an EVAP system leak, it is unlikely to cause the P0443 code, which is specifically related to the purge volume control solenoid circuit.

10. How often do EVAP system issues like the P0443 code occur in the 2008 Nissan Maxima?

Issues with the EVAP system, including the P0443 code, can occur as the vehicle ages, particularly after 100,000 miles due to wear and tear on system components like hoses, valves, and solenoids.