5.4l P0443 code?
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More Turbo
Joined: Nov 2004
Posts: 515
Likes: 6
From: Denver, NC
5.4l P0443 code?
My 04 F250 5.4l had a P0455 code so I took off The EVAP purge valve off and blew air in the port. One way no air came out reverse it and air flows. I put power to it and no clicking so I am guessing it is bad. I put the old one back in and cleared code. Now the light comes on with P0443. I checked plug connection and cleaned it but code came right back. Should I just replace the purge valve? Moorcroft is over $100+ just do not need to waste money this time of year if not necessary. Thanks
Hotshot
Joined: Jan 2004
Posts: 19,762
Likes: 1,079
From: St Louis
It could only cause the P0455.
The P0443 is an electrical circuit fault in the purge valve's control. Could be an open coil or some an open/short in the wiring to the valve or internal to the PCM.
It would be a good idea to simply check the resistance of the valve's coil first to see if it's open. Should be a few dozen ohms.
The P0443 is an electrical circuit fault in the purge valve's control. Could be an open coil or some an open/short in the wiring to the valve or internal to the PCM.
It would be a good idea to simply check the resistance of the valve's coil first to see if it's open. Should be a few dozen ohms.
Tuned
Joined: Aug 2022
Posts: 388
Likes: 87
It could only cause the P0455.
The P0443 is an electrical circuit fault in the purge valve's control. Could be an open coil or some an open/short in the wiring to the valve or internal to the PCM.
It would be a good idea to simply check the resistance of the valve's coil first to see if it's open. Should be a few dozen ohms.
The P0443 is an electrical circuit fault in the purge valve's control. Could be an open coil or some an open/short in the wiring to the valve or internal to the PCM.
It would be a good idea to simply check the resistance of the valve's coil first to see if it's open. Should be a few dozen ohms.
Thread Starter
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More Turbo
Joined: Nov 2004
Posts: 515
Likes: 6
From: Denver, NC
I already replaced it with a motorcraft gas cap and that was not the problem. I did order a new purge valve today we'll get it by next Monday. When I want to test it with the power probe it kept coming up with a Dead short so I am gathering the valve is bed. I guess I will see when the new valve comes. Thank you
Hotshot
Joined: Jan 2004
Posts: 19,762
Likes: 1,079
From: St Louis
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Hotshot
Joined: Jan 2004
Posts: 19,762
Likes: 1,079
From: St Louis
I already replaced it with a motorcraft gas cap and that was not the problem. I did order a new purge valve today we'll get it by next Monday. When I want to test it with the power probe it kept coming up with a Dead short so I am gathering the valve is bed. I guess I will see when the new valve comes. Thank you
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