P0421 Mazda 6 Forums

Dtc P0421 Mazda. Codigo P0421 Mazda 3 The Mazda 2.5L is 2/3 the displacement of the 3800 (3.8L) and I change the filter roughly 2/3 as often (20K vs 12-14 K on the 3800) One common cause is a malfunctioning catalytic converter

The P0421 code appears in a 2010 Mazda 6 2.5L because of the following conditions. In layman's terms, it indicates that your Mazda 6's catalytic converter is not scrubbing pollutants efficiently

got code p0421 Mazda 6 Forums

In layman's terms, it indicates that your Mazda 6's catalytic converter is not scrubbing pollutants efficiently One common cause is a malfunctioning catalytic converter This code is typically set when the vehicle is traveling at a speed between 25 and 60 miles per hour, with a load of 22 to 45 percent, and the engine speed is between 1000 and 3000 RPM.

How to Fix the P0421 Code on Mazda Miata MX5 Mavyn. One common cause is a malfunctioning catalytic converter If it fails to heat up efficiently, it can trigger this diagnostic trouble code

P0421 and P0431 code Mazda 6 Forums. Check Engine Light On With DTC P0421 - 2014-2016 Mazda CHECK ENGINE LIGHT ON WITH DTC P0421 The code is P0421, warm up catalytic converter, bank 1, bank 1 efficiency below threshold