Codes P2440, 1441, 1444, C1201, dashboard X-mas tree :(

[MRT555]

Hi All,

I am new to the forum and have a 2005 Sport V8. I have had my VSC, TRAC, and check engine light on for about a month, and 2 days ago my MAINT light came on and I have no power. The truck is very sluggish, can barely make it up a hill, won't go over 4k rpm in park, and only makes it to about 25-30mph slowly. The codes it threw are:

P2440 - Secondary air injection system valve stuck open (Bank 1)
P1441 - No info
P1444 - No info
C1201 - Engine control system malfunction

Also, I took it in a couple days ago and the codes at that time were something about Catalytic efficiency below threshold. He cleared the codes before I got any numbers or more info. I think it may have been both banks.

Looking for some ideas. I really don't have the $1500 I was quoted to have the injector valve replaced. How hard of a job is it? My guess is that my valve is bad, and i may have a combination of bad O2 sensors and cats. The truck has 160k miles. Any help would be appreciated!

EDIT: It is also more throaty sounding. Similar to when I installed a CAI on my Xterra, but this is just a little louder, and I don't like this one...

Thanks,

- Mike

 

[MRT555]

Ok, So I need to try to do this as cheap as possible. I was thinking of changing both O2 sensors first. Not sure if I would need to change the A/F sensors. If that doesn't work, then change atleast one of the cat's. After that, the other cat. Finally if all else fails, the Air injection valve which I can't find a price for online. What do yall think. I'm just taking guesses. Or maybe 1 cat and O2 sensor together. then other side.

More info: I have been using 10% ethanol gas, and I put Seafoam in the day before this problem got really bad.

 

[nyc4runnin]

MAINT light comes on when u need an oil change since its been 5k miles since you last reset that light. I dont think it comes on if u have other problems. However the VSC lights do come on if u have a CEL (Check Engine Light) light on.

there are ways to check if ur O2 sensors are actually dead using a scope or an obd2 reader that plots data.

i would say try fixing the other problems first before trying to replace the cats and O2 sensors ....