P1441Auxiliary Emission Controls

EVAP Control System Small Leak / Flow During Non-Purge (Nissan/Infiniti)

P1441 is a Nissan/Infiniti EVAP code indicating flow during non-purge conditions or a small system leak, often caused by the EVAP purge or vent valve, or vacuum cut valve, allowing flow when it should be sealed.

🚗 Yes. This is an EVAP code and rarely affects drivability.

LOW

severity

🎯 Top Causes, Ranked by Likelihood

#1Faulty EVAP purge or vent valve$50-$250

45%

A valve that leaks or sticks allows flow during non-purge.

#2Vacuum cut valve or bypass valve fault$50-$250

30%

A stuck vacuum cut valve disrupts sealing.

#3Cracked or disconnected EVAP hose$20-$150

25%

A leaking hose lets the system fail the test.

🩺 Common Symptoms

Check engine light
Possible fuel odor
No noticeable drivability change
Failed emissions test

💰 Repair Cost: DIY vs Shop

DIY Cost

$20-$250

Shop Cost

$120-$400

📋 Free OBD2 Code Cheat Sheet

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🔧 How to Diagnose P1441

1Inspect the EVAP purge and vent valves

2Check the vacuum cut valve operation

3Inspect EVAP hoses for cracks

4Smoke-test the EVAP system

❓ Frequently Asked Questions

Can I drive with P1441?

Yes. It is an EVAP emissions code and rarely affects drivability, but it will fail emissions.

Is P1441 a Nissan code?

Yes, P1441 is a Nissan/Infiniti EVAP control system code for flow during non-purge or a small leak.

What causes P1441?

A faulty purge or vent valve, a stuck vacuum cut valve, or cracked hoses are common causes.

🔗 Related Codes

P0441P0455P0442