P0444 2002 Nissan Altima Sedan Code - EVAP Canister Purge Volume Control Solenoid Valve Circuit Open
Quick Answer
This system controls flow rate of fuel vapor from the Evaporative Emission System (EVAP) canister. Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Control, Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted, Evaporative Emission (EVAP) Purge Solenoid Control 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
- P0444 2002 Nissan Altima Sedan indicates EVAP Canister Purge Volume Control Solenoid Valve Circuit Open.
- Common causes
- Common causes include Faulty Evaporative Emission (EVAP) Purge Solenoid Control, Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted, Evaporative Emission (EVAP) Purge Solenoid Control 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.
Code P0444 2002 Nissan Altima Sedan Description
The EVAP canister purge volume control solenoid valve uses a 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.
What are the Possible Causes of the DTC P0444 2002 Nissan Altima Sedan?
- Faulty Evaporative Emission (EVAP) Purge Solenoid Control
- Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted
- Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection
How to Fix the DTC P0444 2002 Nissan Altima Sedan?
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.
Code Tech Notes
2002 Nissan Altima Factory Service Bulletin OBDII Code P0444
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0444 2002 Nissan Altima Sedan 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.
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Frequently Asked Questions about P0444 2002 Nissan Altima Sedan Code
1. What does OBDII code P0444 mean on a 2002 Nissan Altima Sedan?
P0444 indicates that the EVAP Canister Purge Volume Control Solenoid Valve Circuit is open, meaning the ECM has detected an electrical issue with the purge valve circuit.
2. What are the symptoms of code P0444 on a 2002 Nissan Altima?
Common symptoms include a check engine light, decreased fuel efficiency, possible fuel odor, and difficulties passing emissions tests.
3. What causes the P0444 code on a 2002 Nissan Altima?
Possible causes include a faulty purge volume control solenoid valve, damaged or corroded wiring, disconnected connectors, or a failed ECM.
4. How do I fix the P0444 code on my 2002 Nissan Altima?
Inspect and repair any damaged wiring or connectors, replace the EVAP purge solenoid valve if defective, and clear the code with an OBDII scanner to see if it returns.
5. Can I drive my 2002 Nissan Altima with the P0444 code?
While the car may still be drivable, it is not recommended as it could lead to reduced fuel efficiency, environmental impacts, and difficulty passing emissions tests.
6. How can I test the EVAP canister purge solenoid valve?
You can test the solenoid by applying power and ground to its terminals to see if it clicks, indicating proper operation. If it doesn’t click, it may need replacement.
7. Is the P0444 code specific to electrical issues in the purge valve circuit?
Yes, P0444 specifically points to an open circuit in the EVAP purge solenoid valve, indicating an electrical issue rather than a mechanical fault.
8. How much does it cost to repair code P0444 on a 2002 Nissan Altima?
Repair costs vary but may range from $50 to $200 for parts and labor, depending on whether the issue is wiring-related or the solenoid valve itself needs replacement.
9. Can a loose gas cap cause the P0444 code on a 2002 Nissan Altima?
No, a loose gas cap is unlikely to cause P0444 as this code specifically relates to the purge valve circuit, not the overall EVAP system pressure.
10. What tools do I need to diagnose code P0444 on my 2002 Nissan Altima?
You’ll need an OBDII scanner, a multimeter to check for continuity in the circuit, and basic hand tools to inspect and replace components if necessary.
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