I had the "OCR"Operator Controlled Regen activated on my truck last week. Well today while driving my display said exhaust filter full. Drove it for another 15 minutes and nothing changed. Does the regen NOT happen automatically when when you are driving when the OCR is activated?

What happens if you are on a long trip? Guess you have to pull over for 30 min and do a stationary regen?

 

If you are driving and your filter is full, just enable the automatic regen in the settings and your truck will start a regen shortly if parameters are met. If your filter is full and you are only a couple minutes from home, leave the automatic turned off and either complete an OCR at home or if you plan on going for a long drive the next day, turn on your automatic regen when you leave for that long drive.

 

To start an OCR, the truck has to be stationary. You will see a prompt on the dash for you to hold the OK button while in park. OCR is kind of a last resort option if you know your filter is full and will be unable to meet parameters for a successful auto regen. Best advice is to leave it in auto and let the truck do its thing. If you are in a bind one day by knowing you aren’t going to be able to meet auto regen parameters and the truck is full, then disable auto regen and do an OCR

 

The box has always been checked for "auto regen." I can not uncheck this box no matter what. It always stays like you see it.

Since the OCR is enabled, what parameters have to be met for the truck to regen on its own? Did I need to drive XXX more miles for the truck to do its thing? Once I got the alert that the exhaust was full, I had about 20 miles or so of drive time past that.

When the truck was stationary I did see the prompt on the dash that I need to hold the OK to start OCR and then hold OK again after I make sure there are no debris around the exhaust.

 

Who enabled your OCR option? You should be able to uncheck that auto box. I think a step was missed by whoever activated OCR.

Operator Commanded Regeneration (OCR) is a stationary only regen system. You can not do an OCR while in motion.

I believe the auto regen parameters call for speed of around 40mph. I can’t remember what the exact speed is. Might be 30mph. You have to be driving in a situation that does not require stop and go driving.

 

Dealership enabled it for me.

Correct on going above 30 or 40 mph for the auto regen to kick in. I thought there were other parameters when OCR was enabled that needed to be met for auto regen to kick in..

 

Because you were prompted to do an OCR while the truck was stationary and your auto regen box is still checked, I’m not sure if your truck will actually do an auto regen anymore as normal my you can uncheck that box if OCR was activated correctly.

 

I'll add to this thread if you don't mind - I have a 2019 F-450 with 8,300 miles on it. It's been sitting since the first of March with our Arctic Fox truck camper on it since we got back from a 3300 mile camping trip from MA, to/across FL and back home to MA. I start it up and let it run for about twenty minutes every four or five days, just to keep the batteries fresh, etc. Yesterday, I unloaded the camper because I was getting low on fuel and wanted to start driving the truck, and after I got the truck out from under the camper, I was lowering the camper down. All of a sudden, the idle kicked up to around 1200 rpm for no apparent reason. I walked over, opened the door and revved the pedal with my hand twice and it idled back down to normal. I went back to what I was doing... about three minutes went by and it did it again, so I just let it go. Then the sound changed to something that resembled the "regen" sound that my old '08 6.4 used to make - it has NEVER done this, at least that I have heard! It did this for about 10, maybe 15 minutes while I was buttoning up the camper tie-downs and StableCamper rods. It actually even seemed hot and smoked a tiny bit??? NOTHING on my display at all to indicate it had been in Regen or any problem??? My wife and I took it for a ride and it was perfectly fine! ???

 

Active Regeneration

Once the diesel particulate filter is full of exhaust particles, the engine control module commands the exhaust system to clean the filter through active regeneration. Active regeneration requires the engine computer to raise the exhaust temperature to eliminate the particles. During cleaning, the particles convert to harmless gasses. Once cleaned the diesel particulate filter continues trapping exhaust particles.

The regeneration process operates more efficiently when you drive your vehicle at a constant speed above 30 mph
(48 km/h) and at a steady engine speed for approximately 20 minutes. The frequency and duration of regeneration fluctuates by how you drive your vehicle, outside air temperature and altitude. For most driving, regeneration frequency varies from 100–500 mi (160–805 km) between occurrences and each occurrence lasts 9–35 minutes. You can usually reduce the duration of regeneration if you maintain a constant speed above 30 mph (48 km/h).
When the engine control module detects that the diesel particulate filter is nearly full of particulates and you are not operating your vehicle in a manner to allow effective automatic regeneration, messages appear in the information display as a reminder for you to drive your vehicle in order to clean the diesel particulate filter. If you drive your vehicle in a manner to allow effective automatic regeneration, the information display
shows a cleaning exhaust filter message, which is the normal regeneration process. You can also choose operator commanded regeneration to clean the exhaust system at this point. See Information Messages (page 131).
If you are not able to drive in a manner that allows effective automatic active regeneration or you choose to perform regeneration of the diesel particulate filter while at idle, then operator commanded regeneration would need to be performed.

Operator Commanded Regeneration (If Equipped)

If your vehicle is operated with significant stationary operation, low speed drive cycles less than 25 mph (40 km/h), short drive cycles, a drive time is less than 10 - 15 minutes or the vehicle does not fully warm up, passive and active regeneration may not sufficiently clean the diesel particulate filter system. Operator commanded regeneration allows you to manually start regeneration of the diesel particulate filter at idle to clean the filter. If you are not sure whether your vehicle has this feature, contact an authorized dealer.
When to Carry Out Operator Commanded Regeneration
You can use the operator commanded regeneration feature when a message appears in the information display and you are not able to drive in a manner that allows effective automatic active regeneration or if you choose to manually start the regeneration of the diesel particulate filter manually while the vehicle is idle.

 

Your truck could of and most likely just engaged its high idle mode. In warmer and colder temperatures, the engine idle may increase to 1100-1200 rpm to maintain cooling or heating of the engine.

I have had a stationary auto regen happen a few times in -30C temperatures though. It’s very rare and in my situation, I drove for a week or so in arctic conditions while never going faster than 30mph. The truck also idled about 8hrs each day in that cold temp. The truck needed a regen and did it stationary.

 

If I understand this correctly, I should have continued to drive my truck normally (above 30 mph) for how ever much longer and I would have gotten a display message reminding me to continue to drive my vehicle in order to clean the diesel particulate filter?

 

Im not sure either why I cant uncheck this box..

 

Like forscan, I am pretty sure the dealer has to change two things using IDS. One is to enable the OCR and the other is to enable being able to check that box. He missed the second one.

My dealer did mine and it was his first time doing it. I remember him saying it took him a little while to figure out the steps.

 

im still confused as to why the truck didn’t auto regen even though the box is checked

 

Did you get the DPF% screen activated? The truck won’t tell you it’s in a regen cycle unless you do an OCR. The only way to visually tell is your fuel consumption goes up and your DPF % screen goes down.