P0441 I checked the purge valve?

Tiny
YAZIDAN
  • MEMBER
  • 2016 JEEP CHEROKEE
  • 2.4L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 129,000 MILES
P0441 purge incorrect flow. I checked the purge valve it seems to open and closes. When the purge valve is purging the fuel tank pressure sensor did not go down to vacuum it stayed at 3.46 KPA but ESIM switch went to closed. After I open the gas cap, fuel tank pressure sensor stayed the same at 3.46 KPA. ( The scan tool I have does not use InH2O or Hg ). It that seems like a bad fuel tank pressure sensor or could be something else? Also what the gas tank fuel pressure should be in KPA when the gas cap is open?
Wednesday, December 10th, 2025 AT 3:49 PM

2 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,198 POSTS
Yep, this sounds like the pressure sensor is bad, here is the location so you can swap it out to help fix the problem, be sure to clear the codes once the repairs are completed.

Normal FTPS values (key on, engine off): Typically around 0 kPa (atmospheric pressure) It will drift slightly ±0.3 kPa depending on altitude and temperature.

When you open the gas cap: FTPS should immediately drop to approx 0.0 kPa. If it stays unchanged - sensor is stuck or the reference hose/port is blocked.

The sensor is on the fuel tank with the fuel pump. Check out the images (below). Please let us know what happens.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Thursday, December 11th, 2025 AT 10:23 AM
Tiny
YAZIDAN
  • MEMBER
  • 142 POSTS
Do you know if there is an access hole underneath the back seat to get to it. Also, what you mean by reference hose/port is blocked. Also can I get the wiring diagram of the connector like that I can check 5v ref ground and signal for circuit integrity
Was this
answer
helpful?
Yes
No
Thursday, December 11th, 2025 AT 10:51 AM

Please login or register to post a reply.

Related P0441 Content

VIEW MORE