2000 Mazda Millenia catalytic converter replacement

[kindasimpl]

Our 2000 is giving off codes PO300 and PO431. From my research it indicates the catalytic converter as the O2 sensor would not trigger the 431 code also.

I found several on-line as a replacement but don't know which to choose. Also can a "small town" mechanic do the job or do I need to take it into the city? Is there anything else we should go ahead and replace at the same time; Oxygen Sensor, etc.?

Runs great, no other complaints other than a tiny oil leak that the dealer can't locate. They have put dye in the oil change every time for the past year and still can't trace the leak.

 

[Bu11dogg2]

If you have 70k or less just replace the cat. MOre then likey the 02 sensor went too, so that will need replacement.

If you have 70k + I would do plugs and wires too.

You could probably do both yourslef witha jack, a wrench and some PB blaster.

If you are not mechanically inclined I would take it to a trust worthy mechanic.

It's an easy fix

I'm not 100% sure.... but the catalytic converter might be under Mazda warranty

 

[NCZ13]

no. the cat is considered a general wear and tear item.

eventually cats go bad and they need to be replaced.

 

[Eni6mA18]

MSP Mods: 3" J-Pipe Back Exhaust, APEXi N1 Exhaust, 626 Intake Manifold, AWR Front Mount, AEM SRI, APEXi Turbo Timer, Konig Holes 18" wheels, VIS CF Evo Hood, H&R Springs, Kartboy SS & Bushings, CS Exhaust Hangers, 6000k HID Bixenons, 3000k HID Fogs, CDM 323 Taillights, CDM 323 Badge, Prosport Gauges

LX Mods: DaveB Polished Rings, Kartboy Bushings/Hangers, MSP Sparco Knob, Painted Headlights, Clear Corners, MSP Axleback, 205/40/17 Toyo Proxes4, Rev Model 11 17" Wheels, Tein S-Techs, Tokico HP, DGM Oldstyle Eyelids, Redline Synthetic Transmission Oil, Synthetic Motor Oil, Hawk HPS Pads, 4300k Bixenon HIDs