Solid white Regen light on 2022 Peterbilt 579

As the tiltle said, what does this light mean?

 

DPF Filter?

 

Pull down your sun visor. It’ll tell you usually up there.

 

You need to do a parked regen. If you keep driving it will start to flash, and later it will flash and the check engine light will come on.

 

Oftentimes, when a light would show up that I didn't understand, I would read the owners manual for the engine.

 

How do I do that? I tried to do it yesterday but it wasn't working.

 

It was at the shop, it had a check engine light and did say it needed a regen, they changed some sensor and stuff, I thought they regen it, I guess not.

 

Your truck will tell you when\if it needs a 'Park Regen' anytime you set your brakes.
Most times your truck will do a rolling regen while moving you can tell when that is taking place, you will have a slight loss of power & you might hear a tone difference kinda like a compressor running.
When that light comes on usually after driving for awhile & you stop, most times indicates it's finishing its burn process & the light will go out when finished.
If this continues to be a frequent issue light coming on, than there probably is another sensor bad or also might need the DPF filter removed & properly cooked in a oven.

 

That’s not accurate. That’s not the high exhaust temp light. The light in the pic means it’s asking for a parked regen because the soot level in the DPF is getting too high.

 

Set the brakes and hold the switch down for a few seconds.