Warm Up Catalist Insufficent In Bank 1 P0421

Asked by Nov 29, 2015 at 10:27 PM about the 2006 Mitsubishi Lancer SE

Question type: Maintenance & Repair

Hi, im looking to purchase a used 2006 Mitsubishi lancer es automatic w/
182k on the odometer., the car looks great in and out.. price is $2600, but it's
service engine light is on, the owner said when he diagnosis it's
giving the  P0421 code which is Warm up catalist insufficent in bank 1. do you
think it's worth buying it, can i fixed it by going to a mechanic shop.

2 Answers

98,375

Well you know for sure that it is going to have to have at least one pre catalyst and the sensor as well, a good exhaust shop should be able to do this for you somewhere around 300 bucks maybe less. The price is good if everything else checks ok. Personally I never have liked Mitsubishi products, they have always seemed underpowered and overpriced on the parts, then there is the reliablity, just not that great. But as always the choice is yours, just do a little research on what you are looking at and go from there. HTH

485

Mitsubishi is a troublesome vehicle to most owners, but a cat coming on line "late" is usually dying from contamination from either running very rich (prolonged missing cylinder(s) and/or ignoring a CEL .... or from and engine that burns oil and wasted the cat. Mitsubishi was one of the first companies to build cats with "wire explosion" coatings that could not handle minor contamination of their catalyst beds. Hence, when other manufacturers found they could save $$$s by the same wire explosion coatings, then lube oils had to be reconfigured to "LE" oils that removed critically needed lubrication additives. In general..... LE oils cause a lot of untoward wear to older engine designs. There's always the possibility that the cat was changed for a used one, since a new or rebuilt one for the BIG THREE "M" cars (Mercedes-Mitsubishi-Mazda--- that charge exorbitant prices for their parts) was too expensive for someone to replace prior to selling their car. In my book, look for another car.

Your Answer

Mitsubishi Lancer Experts

  • #1
    Daniel Foster
    Reputation
    180
  • #2
    T_S_T
    Reputation
    170
  • #3
    COMETGUY61
    Reputation
    150
View All

Related Models For Sale

Used Mitsubishi Lancer Evolution
20 Great Deals out of 505 listings starting at $13,826
Used Honda Civic
834 Great Deals out of 78,398 listings starting at $900
Used Subaru Impreza WRX
55 Great Deals out of 1,283 listings starting at $3,365
Used Ford Mustang
759 Great Deals out of 42,755 listings starting at $1,300
Used Mitsubishi Eclipse
27 Great Deals out of 1,275 listings starting at $1,250
Used Mazda MAZDA3
361 Great Deals out of 27,135 listings starting at $1,059
Used Subaru Impreza
210 Great Deals out of 18,364 listings starting at $1,500
Used Dodge Charger
468 Great Deals out of 27,625 listings starting at $1,650
Used Toyota Corolla
927 Great Deals out of 66,116 listings starting at $1,995
Used BMW 3 Series
1,043 Great Deals out of 31,563 listings starting at $1,000
Used Honda Accord
1,019 Great Deals out of 62,742 listings starting at $999
Used Nissan 350Z
59 Great Deals out of 1,201 listings starting at $3,917
Used Subaru Impreza WRX STi
44 Great Deals out of 662 listings starting at $9,998

Used Cars For Sale

2015 Mitsubishi Lancer SE For Sale
35 listings starting at $11,200
2014 Mitsubishi Lancer SE For Sale
36 listings starting at $9,850
2013 Mitsubishi Lancer SE For Sale
14 listings starting at $7,495

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.