Questions & Answers for: 2002 mitsubishi lancer p0421

lancer-troubleshooting/349095-code-p0421-call-mitsu-before-you-do-anything.html Code P0421- Call Mitsu before you do anything! I called my nearest dealership today and for those who dont know, if your

...lancer-troubleshooting/349095-code-p0421-call-mitsu-before-you-do-anything.html Code P0421- Call Mitsu before you do anything! Icalled my nearest dealership today and for those who dont know, if ...

trouble code p0421 could this be a sensor A bad cat, exhaust leak, loose sensor, bad engine controller are the potential causes. Good luck.

2002 lancer P0421 misfire fuel comp catlyst EVAP 02 sensor 02 htr EGR What does these code mean? This all comes down to the catalytic converters. More than likely you will need to replace both of them

diagnostic codes I retrieved P0421 misfire fuel comp catlyst, EVAP, 02 sensor, 02 htr, EGR does anyone know what these mean, if it's an easy cheap fix? thanks Try this site - good resource for OBD-II ...

2002 mitsubishi lancer code po421 P0421 - Warm Up Catalyst Efficiency Below Threshold (Bank 1) Basically this means that the oxygen sensor downstream of the catalytic converter on bank 1 is detecting ...

code p0421 GOOGLE YOUR CODE OR CALL AUTOZONE WILL GIVE FOR FREE

REplaced the cat and 02 sensors. Did the recalls. Also did a tune up, excluding the fuel filter. PO421 code is on again. Checked for exhaust leaks and vacuum leaks. Flushed the injectors. Next is ...

...2002 mitsubishi lancer? this code definition is catylist warm-up efficiency. is it a cat or oxygen sensor problem? this code is lazy cat (or weak or dead)420's are very hard to diagnose here is the ...