FixVault
Home
›
Mazda
›
2002
›
MPV ES
›
Repair and Diagnosis
›
Engine Performance
›
System
›
Engine Controls - Self-Diagnostics
›
Diagnostic Tests
›
DTC P0421 Or DTC P0431
›
Notes
DTC P0421 Or DTC P0431: Notes
Code Definition
DTC P0421: Warm Up Catalyst System Efficiency Below Threshold - Right Side
DTC P0431: Catalyst System Efficiency Below Threshold - Left Side