OBD2 Code P0441: What It Means

Figuring out why your Check Engine Light is on means deciphering OBD-II (or “OBD2”) codes, and that can be kind … Continued

Figuring out why your Check Engine Light is on means deciphering OBD-II (or “OBD2”) codes, and that can be kind of annoying. That’s why Car Bibles did it for you! You’re welcome, now let’s get into solving your issue.

OBD2 P0441: What It Means

“Evaporative Emission Control System Incorrect Purge Flow.” This code indicates that there’s an issue with the EVAP system. This system is how the gas tank’s vapors are prevented from escaping to the outside world. The be more specific, there’s an incorrect amount of flow in the purge valve. The purge valve sends these vapors to their demise in the combustion chamber once the engine’s warmed up.

Likely Symptoms 

Here’s what you may experience due to P0441 code:

It’s doubtful that would will experience any changes in drivability, idle, or really anything you’ll easily notice. The most obvious indication is a Check Engine Light will appear in the instrument panel.

Probable Causes

Here’s what could be causing the issue:

  • Worn gas cap seal. The gas cap could be worn and not sealing properly.
  • Damaged or cracked EVAP lines. The lines throughout the system might be old or damaged.
  • Damaged, worn, shorted wiring. The wiring to the purge valve and other components might be damaged or worn, or there might be a short.
  • Faulty purge control valve, vacuum switch, or purge solenoid. These parts are broken, and thus not functioning properly.
  • Faulty PCM. This could be broken and not functioning properly.

What Part Is Potentially Affected?

Essentially, anything that’s a part of the EVAP system, including their respective wiring and lines.

Possible Fixes

Here are the most common fixes to remedy P0441 code:

  • Replace the gas cap. This is a cheap and easy fix, and the most common culprit.
  • Inspect and replace and EVAP lines. If any EVAP lines show damage, holes, etc, replace them with certified EVAP lines. These can be bought in bulk from any auto parts supplier.
  • Inspect and replace wiring and connectors. A multimeter can be used to test the wiring and connectors, and faulty pieces can be easily replaced with proper wiring and shrink tubing.
  • Replace the vacuum switch. Since this is the cheapest of the parts after the lines, connectors, wiring, and gas cap, consider this as next in line.
  • Replace the purge solenoid. Same as above, the next-most-expensive part, typically.
  • Replace the purge control valve. And finally, this might not be functioning and be in need of replacement.

Finding The Parts You Need

Now that you’ve figured out what’s wrong with your hooptie, let’s talk about where you’re gonna find that part’s replacement.

There are plenty of places you can buy auto parts from, but Car Bibles gets paid if you click this Advance Auto link so that’s the one we’re serving up. Advance Auto Parts also has delivery, curbside pickup, and a host of helpful diagrams to aid your repair!

Peter Nelson

Peter NelsonPeter Nelson has been wrenching on and playing with cars since he started driving them quickly between the cones at Chicagoland autocross events in his late teens. Nowadays, he can be found wringing out his Mazda2 at tracks all over California. His writing background includes Winding Road, Donut Media, and Autolist.com. He's also an avid cyclist and '80s/'90s action film connoisseur. Contact the author here.