← Back to list

2015 Dodge Durango P0441 Code: EVAP Purge System Flow Issue and Diagnosis

Model: 2015 Dodge Durango Fault Code: P0441 Posted: 2017-11-28 11:19

I'm looking for help with my 2015 Dodge Durango that has just triggered a P0441 diagnostic trouble code. I know that EVAP-related issues are common in this model, but I've heard conflicting information about whether it's caused by the gas cap or something else. The P0441 code specifically indicates an issue with the evaporative (EVAP) purge system flow — not a simple gas cap problem. Since my vehicle doesn't have a factory-installed gas cap, I'm wondering if this code is still relevant or if it points to another underlying cause. Could someone clarify what exactly P0441 means and whether it's something a DIYer can handle? I have a 3.6L V6 engine and would appreciate guidance on where to start troubleshooting.

Related fault codes
P0441
Comments (3)
Anonymous 2017-11-28 11:43

P0441 is an EVAP system fault related to purge flow performance, not directly caused by the gas cap. The issue typically stems from a vacuum leak or failure in the purge flow valve. To diagnose this, you should check for vacuum leaks in the purge hose and ensure the purge solenoid is receiving proper vacuum supply. A faulty purge flow valve can prevent the system from properly purging vapors into the intake.

Anonymous 2017-11-28 11:51

I have a 3.6L V6 engine — thanks for confirming. The purge flow valve is part of the EVAP system and is generally accessible for DIY repairs, but it requires some mechanical skill and tools like a vacuum gauge or scan tool to properly test function. If you're not experienced with emissions systems, it might be best to consult a certified mechanic.

Anonymous 2017-11-28 15:14

P0441 - EVAP PURGE SYSTEM PERFORMANCE Set Condition: If the Powertrain Control Module (PCM) detects that the purge vapor ratio and the EVAPORATIVE SYSTEM INTEGRITY MONITOR SWITCH (ESIM) closed ratio are below a calculated threshold, it commands the purge solenoid to operate at a specified flow rate. If the ratio remains low after multiple attempts, a two-trip fault is recorded; the MIL will remain on until three successful good trips occur. Possible Causes: - Fuel Tank Pressure (FTP) Sensor: 5-volt supply open circuit or excessive resistance - EVAP Purge Solenoid: Vacuum supply failure - EVAP Purge Hose/Tube: Obstruction or blockage - Fuel Tank Pressure Sensor: Malfunction - EVAP Purge Solenoid: Internal failure - EVAPORATIVE SYSTEM INTEGRITY MONITOR SWITCH (ESIM): Faulty or misaligned - Powertrain Control Module (PCM): Software issue or sensor data inconsistency