Mazda 6 P0421. Code P0421 Mazda Warm Up Catalyst System Right Efficiency Below Threshold A P0421 happens when the downstream O2 sensor inverts its signal too quickly (basically matching the upstream O2 sensor) The computer reads this as a catalytic converter that is no longer reacting and just allowing un-catalyzed exhaust to pass by. How can I repair OBDII code P0421 in a Mazda related to the Warm Up Catalyst System Right Efficiency Below Threshold? - Repair options may include replacing the catalytic converter, fixing any exhaust leaks, replacing the oxygen sensor, or addressing issues with the engine's air-fuel mixture
Need help with codes p1487 and p0421 for Mazda 6 2004 from www.justanswer.com
2.2M posts 103K members Since 2002 Mazda6club.com is a forum dedicated to the. How can I repair OBDII code P0421 in a Mazda related to the Warm Up Catalyst System Right Efficiency Below Threshold? - Repair options may include replacing the catalytic converter, fixing any exhaust leaks, replacing the oxygen sensor, or addressing issues with the engine's air-fuel mixture
Need help with codes p1487 and p0421 for Mazda 6 2004
I have a 07 mazda 6 4cyl with code p0421 which catylic converter i should change the one on top of bottom and do u have picture P0421 is titled Warm up catalyst system efficiency below threshold in the Mazda repair manual As sensors age and reach the end of their lifespan (50,000mi for a 2 lead, 70,000mi for a 3-lead, 100,000mi for a 4 lead) or (0.1V-1.0V response > 300 milliseconds) they.
Выпуск. Прощай p0421, прощай катализатор… — Mazda 6 (3G) GJ, 2 л, 2012. TWC means the catalyst, PCM means the engine computer. A P0421 happens when the downstream O2 sensor inverts its signal too quickly (basically matching the upstream O2 sensor) The computer reads this as a catalytic converter that is no longer reacting and just allowing un-catalyzed exhaust to pass by.
P0421 Mazda 6 Forums. 6 = Presilencer (resonator) - not pictured on OEM exhaust but would bolt directly downstream from bank 1 TWC Under possible causes it lists exhaust gas leakage, A/F sensor and/or HO2S sensor looseness, TWC deterioration or malfunction and PCM malfunction