AutoCodes – Generic – P1441

P1441 Code - Evaporative Emission Control System Leak

Quick Answer

This diagnosis detects leaks in the Evaporative Emission (EVAP) purge line using the engine intake manifold vacuum. Common causes include Missing or loose fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1441 indicates Evaporative Emission Control System Leak.
Common causes: Common causes include Missing or loose fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 34,198

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1441 Description

This diagnosis detects leaks in the Evaporative Emission (EVAP) purge line using the engine intake manifold vacuum. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition.
The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.

OBDII Code P1441 - Evaporative Emission Control System Leak - AutoCodes.com — P1441 Code - Evaporative Emission Control System Leak

What does this mean?

What are the Possible Causes of the DTC P1441?

Missing or loose fuel cap
Incorrect fuel filler cap used
Fuel filler cap remains open or fails to close
Foreign matter caught in fuel filler cap
EVAP canister or fuel tank leaks
EVAP system hose leaking
Fuel tank leaking

How to Fix the DTC P1441?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1441 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 P1441 code?

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Need Help with the Code?

Get the P1441 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1441 Audi — EGR Vacuum Regulator Solenoid Valve Open/Short To Ground
P1441 BMW — Leakage Diagnostic Pump Control Open Circuit
P1441 Buick — EVAP System Flow During Non-Purge Condition
P1441 Cadillac — EVAP System Flow During Non-Purge Condition
P1441 Chevrolet — EVAP System Flow During Non-Purge Condition
P1441 Dodge — EVAP System Flow During Non-Purge Condition
P1441 GMC — EVAP System Flow During Non-Purge Condition
P1441 Infiniti — Evaporative Emission Control System Very Small Leak
P1441 Isuzu — EVAP System Flow During Non-Purge
P1441 Lexus — Secondary Air Injection System Switching Valve No.2 Stuck Open Bank 1
P1441 MINI — Leakage Diagnostic Pump Control Open Circuit
P1441 Nissan — Evaporative Emission Control System Very Small Leak
P1441 Pontiac — EVAP System Flow During Non-Purge Condition
P1441 Saturn — EVAP System Flow During Non-Purge Condition
P1441 Scion — Secondary Air Injection System Switching Valve No.2 Stuck Open Bank 1
P1441 Subaru — Fuel Tank Pressure Control System High Input
P1441 Toyota — Secondary Air Injection System Switching Valve No.2 Stuck Open Bank 1
P1441 Volkswagen — EGR Vacuum Regulator Solenoid Valve Open/Short To Ground

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 P1441 Code

1. What are the common symptoms of OBDII code P1441 related to the Evaporative Emission Control System Leak?

- Common symptoms include the illumination of the check engine light, a fuel smell around the vehicle, and decreased fuel efficiency.

2. What are the possible causes of OBDII code P1441 indicating an Evaporative Emission Control System Leak?

- Potential causes of this code include a loose or damaged gas cap, a leak in the evaporative emission control system hoses, faulty purge valve, or a malfunctioning charcoal canister.

3. How can I diagnose the source of an Evaporative Emission Control System Leak causing code P1441?

- A smoke test can help locate the leak in the evaporative emission system by introducing smoke into the system and looking for where it escapes.

4. Can a loose gas cap trigger OBDII code P1441 indicating an Evaporative Emission Control System Leak?

- Yes, a loose, damaged, or missing gas cap can cause the system to detect a leak and trigger code P1441. Ensure the gas cap is properly tightened or replace it if needed.

5. Is it safe to drive with OBDII code P1441 related to an Evaporative Emission Control System Leak?

- It is generally safe to drive with this code, but it is recommended to address the issue promptly to prevent potential fuel odor, decreased fuel efficiency, or other related problems.

6. Can a DIY enthusiast repair OBDII code P1441 for an Evaporative Emission Control System Leak?

- Depending on the exact cause, some minor repairs like replacing a gas cap or a purge valve can be done by a DIY enthusiast. However, more complex issues may require professional diagnosis and repair.

7. How much does it typically cost to repair OBDII code P1441 due to an Evaporative Emission Control System Leak?

- The cost of repair can vary based on the cause of the issue and labor rates. Simple fixes like replacing a gas cap may cost around $20-$50, while more complex repairs could range from $100 to $500 or more.

8. Can weather conditions affect the likelihood of triggering OBDII code P1441 for an Evaporative Emission Control System Leak?

- Extreme weather conditions, such as very hot or very cold temperatures, can sometimes contribute to the triggering of this code due to the expansion or contraction of components in the evaporative emission control system.

9. How long does it typically take to repair OBDII code P1441 related to an Evaporative Emission Control System Leak?

- The repair time can vary depending on the cause of the code and the extent of the issue. Simple fixes like replacing a gas cap can be done in a matter of minutes, while more complex repairs may take several hours.

10. Can ignoring OBDII code P1441 for an Evaporative Emission Control System Leak lead to more serious problems?

- Ignoring this code can potentially lead to increased emissions, decreased fuel efficiency, and other related issues. It is advisable to address the problem promptly to prevent further complications.