EVAP Check Engine Codes

So I went to pull some ABS and Brake codes this morning and was reminded of some Check Engine codes that I had been ignoring because they were just emissions codes that didn't appear to be causing any immediate issues.

CODES:
P0452 Evaporative Emissions Systems Pressure Sensor/Switch Low Input
P043E Evaporative Emissions Systems Leak Detection Reference Orifice Low Flow
P043F Evaporative Emissions Systems Leak Detection Reference Orifice High Flow
P02401 Evaporative Emissions Leak Detection Pump Stuck OFF
P02402 Evaporative Emissions Leak Detection Pump Stuck ON
P24129 Evaporative Emissions Systems Pressure Switching Valve Stuck ON

What's the likely remedy(s)?

 

I have the same issue...when I purchased the truck 4 years ago from Toyota dealer, check engine showed up a few days after.
Went back and was told Its a filter that cost 710$. Needless to say they came up with some fine print saying it wasn't covered on my warranty.
I got a OBD to clear to bogus code as even the dealer doesn't know how to fix it.


lately, I've had some issues when I start the truck. Changed my Battery, Just changed spark plugs. 143K and still original.
Always get same codes last 4 years. Gravel roads or off-road seems to piss off something.

Humidity and rain is when I have the most issues. I have all the same codes as you. But this week I got a new one P2419

Curious to see if you get info on this...sorry I cant help

 

When you see 6 codes with the E and F, its a canister. 99.9% of the time.

They are tricky to do due to the connectors but not impossible.

They can sometimes come on due to weather and not return for awhile. I'd start by simply clearing the codes and seeing if it even comes back.

 

I have cleared mine a few times, light comes back almost immediately.