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Discussion Starter #1
I did my 2nd oil change about 3 weeks ago. Used the factory 5w-30 oil and motorcraft filter. The day I changed it I had the message pop up a couple of times of low oil pressure. I checked the cap on the filter to make sure it was tight and snugged it up a little further and the message went away and didn't see it again. Now today it happened 5 times on the way to work. Usually just for a second and by the time you could hit the "OK" button it was gone. One time sitting at a red light it lasted for a few seconds to the point I was getting a little bit of panic. Any ideas what to look for??
 

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This happened to me, and the dealer replaced the oil pressure switch. That was three months ago, and I have not had the message since.
 

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I replaced my sender and added a mechanical gauge. Seemed to have fixed it until the long trip I am on pulling a 24 ft camper. What I am finding out is any time I am over 200F and come to a stop it beeps. Just a tap on the accelerator and it goes away. Interestingly, I have let it go on a few times and the gauge never drops below 10psi.

Normally it idles at about 12 psi.
 

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I had the same problem, dealer replaced sensor and still had problem. tech reported that something was wrong with the oil cooler and they would replace. if have been waiting 2 months on a seal for the oil cooler. i am supposed to get the truck back today or tomorrow and will have a long talk with the tech about the problem. Corporate Ford Customer Care was about as useful as a fart in a space suit. I will update after i get the truck back.
 
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@rwharris1846 - please let us know what you find out from your tech, as I am finding it hard to believe such a high failure rate with the oil pressure sensor, and it doesn't seem like replacing it resolves the issue...

One would expect issues like this to have been sorted out long ago since this base engine has been used for at least 10+ years by JLR in Europe, but Ford did redesign the oil pan and oil cooler for the F150, so those would be the areas I would be investigating as to why this issue seems to be cropping up with F150 PS Diesel owners.
 

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Well might as well update again. Made it about 2 or 3 weeks and now the truck is back to throwing the low oil pressure message! I just saw @Dunrollin 's thread about adding the analog oil pressure gauge which was interesting. Hate that this is a continuing issue. Last time the dealer had my truck a whole week! We'll see where it goes.
 

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Well might as well update again. Made it about 2 or 3 weeks and now the truck is back to throwing the low oil pressure message! I just saw @Dunrollin 's thread about adding the analog oil pressure gauge which was interesting. Hate that this is a continuing issue. Last time the dealer had my truck a whole week! We'll see where it goes.
You may want to try a 5W40 oil. That will sometimes fix a low pressure issue, usually on older engines though so likely not the issue.
 

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You may want to try a 5W40 oil. That will sometimes fix a low pressure issue, usually on older engines though so likely not the issue.
I did that, switched to Rotella T6 and the message went away, even pulling a camper on long hauls.
 

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I'm getting frustrated with it. I called the dealer and they want me to drop it off and leave it for diagnosis but could take a week just to look at it (they are busy I get it). I asked about the pressure switch and they said if it was on national backorder which it appears to be then that means they can't get one either. I'm tired of sitting at a stop light and having the alarm go off 4 or 5 times. Sometimes I put it in Neutral but other times you can't safely be out of gear. Just trying to think of other options. It's interesting about using Rotella and the messages goes away. I feel like if the warning is coming on using the Motorcraft recommended oil though that there is a problem that needs to be addressed. Anyone know if there somewhere online to find that pressure switch who has it in stock??
 

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I replaced my sender and added a mechanical gauge. Seemed to have fixed it until the long trip I am on pulling a 24 ft camper. What I am finding out is any time I am over 200F and come to a stop it beeps. Just a tap on the accelerator and it goes away. Interestingly, I have let it go on a few times and the gauge never drops below 10psi.

Normally it idles at about 12 psi.
I am interested to know more about your mechanical gauge. Can you please share where you purchased it and the perhaps details of the installation. A photo of your set up would also be helpful for all of who are interested in making such an addition. Thank you.
 

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Well another update...truck went to the dealer this morning and they said the oil pump needs to be replaced! Will have to order the part and takes a few days so scheduled to have it done next Thursday. Meanwhile of course I had my vacation planned for this weekend where I was supposed to be towing the camper 600 miles and they said DO NOT do it. Thanks 2020! Uggh I"ll post back results when the new pump is in. Thankfully under warranty with only 8k on the clock
 
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