HOME
ASK A QUESTION
REPAIR GUIDES
BECOME A MEMBER
LOG IN
Login with Facebook
OR
Remember me
NOT A MEMBER?
FORGOT PASSWORD?
CONTACT US
PRIVACY POLICY
TERMS AND CONDITIONS
☰
Home
Mitsubishi
All
Exhaust
Catalytic Converter
Rotten Egg
MITSUBISHI CATALYTIC CONVERTER ROTTEN EGG
Select Make
All Makes
Acura
Alfa Romeo
AMC
Aston Martin
Audi
Bentley
BMW
Buick
Cadillac
Chevrolet
Chrysler
Citroen
Daewoo
Daihatsu
Datsun
Dodge
Eagle
Ferrari
Fiat
Fisker
Ford
Geo
GMC
Holden
Honda
Hummer
Hyundai
Infiniti
International
Isuzu
Jaguar
Jeep
Kia
Lancia
Land Rover
Lexus
Lincoln
Mazda
Mercedes Benz
Mercury
Merkur
MG
Mini
Mitsubishi
Nissan
Oldsmobile
Opel
Peugeot
Plymouth
Pontiac
Porsche
Proton
Ram
Renault
Rolls Royce
Rover
SAAB
Saturn
Scion
SEAT
Skoda
Smart
Subaru
Suzuki
Tesla
Toyota
Triumph
Vauxhall
Volkswagen
Volvo
Select Model
All Models
3000GT
380
Adventure
Carisma
Celeste
Challenger
Chariot
Colt
Delica
Diamante
Eclipse
Emeraude
Endeavor
Eterna
Expo
Express
FTO
Galant
Grandis
i-MiEV
L100
L200
Lancer
Lancer Evolution
Lancer Sportback
Legnum
Magna
Mighty Max
Mirage
Montero
Nimbus
Outlander
Outlander EV
Outlander Sport
Pajero
Proton
RVR
Saporro
Shogun
Sigma
Space Star
Space Wagon
Star Wagon
Starion
Tredia
Triton
Truck
Van
Verada
Found 1 result
1999 Mitsubishi Galant 99 Mitsu Galant-P0421 Failed...
Hello, I've Had This P0421 Code For The Last Couple Of Years And Have Passed At Least 2 Emissions Inspections. The Light Has Been On...
Asked by
kendu90
·
1 ANSWER
1999
MITSUBISHI GALANT
Ask a new Mitsubishi question
Ask a Car Question. It's Free!