P1441 - Evaporative Emission Control System Leak

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?
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Possible causes
- 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
What does this mean? What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
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.

P1441 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 Video
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 Image
P1441 ISUZU EVAP System Flow During Non-Purge
P1441 LEXUS Secondary Air Injection System Switching Valve No.2 Stuck Open Bank 1  P1441 Image
P1441 MINI Leakage Diagnostic Pump Control Open Circuit
P1441 NISSAN Evaporative Emission Control System Very Small Leak  P1441 Image
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 Image
P1441 SUBARU Fuel Tank Pressure Control System High Input
P1441 TOYOTA Secondary Air Injection System Switching Valve No.2 Stuck Open Bank 1  P1441 Image
P1441 VOLKSWAGEN EGR Vacuum Regulator Solenoid Valve Open/Short To Ground
Related Information
Repair Importance Level: 3
 
1=Low 2=Medium 3=High What does this mean?
Repair Difficulty Level: 3
 
1=Easy 2=Moderate 3=Hard What does this mean?
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