hello im new to this forum nd new to the lancer came from honda to lancer nd jeeze i never had as many problems untill i got a lancer.. well i got the po421 bank 1 cat code i replaced the o2 sensor on the exhaust manifold and i still have the code so what do i do what is bank 1 catalytic concerter since i saw 2 cats one on the exhaust manny and one under the car.. any1 ever had this problem nd got it resolved im way past the recall requirements so theres no way theyre guna fix it... any advice would be helpful thanks =]

 

Since it looks like you want to shoot a few rounds at the Mitsu product... I own a Lancer, and a Honda. My Honda's got more issues than my Lancer, and you don't see me go on Honda-Tech.com and open a thread like you did.

Google the god damn code ffs.
Or at least search it on this board.

If there ain't a million threads about it on this board, there isn't a single one.
It's obvious you did nada before you posted this thread.

That's a lovely 1st post you got there, welcome to EvoM

 

lol
Common issue with the lancer
Just buy 2 anti foulers , drill one out , put them on the secondary o2 sensor and bam fixed.

 

Throwing parts at a code hoping it will go away.....only a honda guy. You have to diagnose first, then replace the part!

P0421
Warm up catalyst efficiency below threshold

Here is the t/s info....good luck! You sure you can handle this...

I am also assuming you are out of the 7 year emissions warranty?

 

First of all i asked for advice not for u to talk **** on my thread so wtf dnt asnwer if u aint got **** to say dick head fyi smart *** i did my search and aint **** come up but a whole bunch of bull**** bout takin it to the dealer so take a dick nd shove it.

 

I did that but im jus tryna find out wtf id bank 1 thats all im askin nd i jus got ppl talkin **** to me like seriously guys r such *******s! Jus kuz ima girl dnt mean i dnt kno how to do **** bout cars im used to hondas nd lancers r much more difficult to me than a simple eg motor

 

Thanks ur da only one wit sum actual help! Yea its out of the question gettin it fixed at the dealer is past 100xxx miles

 

stay out of my profile kid.
I got better things to do than read your e-thugin bs.

None said anything about your gender. So what's your point?
Change that diaper of yours, I think it's getting full and possibly messing up your temper.

Help your-self and we'll be more than willing to help you.
But don't forget... help your-self first.

 

if u got better things to do then y u talkn ish on my thread... idiot dnt get mad kuz u got told off by a girl... its ok =[

 

Wow you really have a thing about girl power or something? I'm past that age group, try again.

 

Whoa calm down there mushmouth. Why not try spelling things correctly, and do you really think **** a bunch of time makes you more intimidating?

 

o yea help my by what talkin ****??? kuz thats all u been doin i asked a simple question on my thread nd all u did was put your 2 sense in it nd not helpin so yea w.e

 

Please attempt to spell things right, people give you more respect that way, and in the end, more of their time.

 

Now that's classy right there.

Oh, and it's the cat.

 

Lol Dump kids .
Get off the forum and go learn how to type civilized .