Check Engine Light with code P0441

Good morning,

The code indicating not enough flow. That cannot be adjusted and there is purging you can do to make it better.

In most cases, it is the purge valve in the front that is the issue but needs to be checked.

Can you verify the code number? 441 does not show up for this model.

I attached a picture of the purge valve for you to view.

Also, there is a description of the system below.

Roy

DUTY CYCLE EVAP CANISTER PURGE SOLENOID
All models are equipped with a duty cycle EVAP canister purge solenoid. The solenoid regulates the rate of vapor flow from the EVAP canister to the intake manifold. The Power-train Control Module (PCM) operates the solenoid.

During the cold start warm-up period and the hot start time delay, the PCM does not energize the solenoid. When de-energized, no vapors are purged. The PCM de-energizes the solenoid during open loop operation.

The engine enters closed loop operation after it reaches a specified temperature and the time delay ends. During closed loop operation, the PCM cycles (energizes and de-energizes) the solenoid 5 or 10 times per second, depending upon operating conditions. The PCM varies the vapor flow rate by changing solenoid pulse width. Pulse width is the amount of time that the solenoid is energized. The PCM adjusts solenoid pulse width based on engine operating condition.

The solenoid attaches to a bracket located in the engine compartment near the EVAP canister (Fig. 2). The top of the solenoid has the word UP or TOP on it. The solenoid will not operate properly unless it is installed correctly.

CIRCUIT OPERATION
When the ignition switch is in the START or RUN position, it connects circuit A1 from fuse 3 in the Power Distribution Center (PDC) to circuit A21. Circuit A21 powers circuit F12 through fuse 11 in the fuse block. Circuit F12 supplies power to the Duty Cycle EVAP/Purge solenoid.

The Power-train Control Module (PCM) provides the ground path for the solenoid on circuit K52. Circuit K52 connects to cavity C20 of the PCM.

According to ProDemand, the likely culprit is a failed Evap Purge Solenoid. It might be stuck open, stuck shut, have a broken or shorted wire, or it could be shorted internally. The Evap Purge Solenoid is inside the right (passenger side) inner fender. The attached images are of the purge solenoid, pulled from RockAuto.com at this page: https://www.rockauto.com/en/catalog/jeep,1997,wrangler,4.0l+l6,1185285,exhaust+&+emission,vapor+canister+purge+valve+/+solenoid,4936

While the likely culprit is the purge solenoid itself, I would highly suggest checking the vacuum lines and the electrical wires before buying anything.

Take a look at this guide for information on broken/leaking vacuum lines: https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

And look here fort information on how to check the wiring: https://www.2carpros.com/articles/how-to-check-wiring - If you need a multimeter, here's the one that I have: https://www.amazon.com/gp/offer-listing/B000X5TSUA - it's also available at the local Sears or Kmart (if there are any of those open anymore). Similar ones are sold at your local auto parts shops (AutoZone, Advance Auto, Oreilly Auto, Pepboys) or at the Home improvement stores (Lowe's, Home Depot).

I hope that this information is useful to you. Please check it out and let us know what you find. We'll go from there as needed. Good luck!