so i got this code P0421
#1
so i got this code P0421
So i just got myself a 03 lancer and sadly i already got my first CEL[:'(]
the code im getting is this P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
since i dont know a thing about my lancer yet, i wanted to see if the experienced guys in this forum can help me out
any suggestions would be gladly appreciated!
the code im getting is this P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
since i dont know a thing about my lancer yet, i wanted to see if the experienced guys in this forum can help me out
any suggestions would be gladly appreciated!
#3
RE: so i got this code P0421
yep. the cat is out. fairly common on the lancers how many miles do you have on the car? there is some kind of a warranty extension for certain cars that are having this problem. i just replaced one on an 03 lancer
#5
RE: so i got this code P0421
ORIGINAL: 07outty
..go down a couple of threads.
look at the replys to "my baby's sick".
..go down a couple of threads.
look at the replys to "my baby's sick".
so what would you guys recommend?
an oem cat,a test pipe,or any other suggestion?
oh and is it bad driving around with my cat messed up?
#6
RE: so i got this code P0421
ORIGINAL: blk n tan
yep. the cat is out. fairly common on the lancers how many miles do you have on the car? there is some kind of a warranty extension for certain cars that are having this problem. i just replaced one on an 03 lancer
yep. the cat is out. fairly common on the lancers how many miles do you have on the car? there is some kind of a warranty extension for certain cars that are having this problem. i just replaced one on an 03 lancer
so what cat do you recommend?
#7
RE: so i got this code P0421
dude i have the same problem but different people keep telling me different things like its DEFINITELY the header....im starting to believe that its the header that is out cause of the many people with the same problem....ima get a new header tomorrow and ill let you know what that does
#9
RE: so i got this code P0421
there should be 2 sensors on your car one in the header and one near the Catalyctic Converter the same with the 2008 Lancer.
Road Race is developing the Headers for the PZEV engine. for now they're only selling the non pzev engine- Headers
Road Race is developing the Headers for the PZEV engine. for now they're only selling the non pzev engine- Headers