LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Toyota
>>
2004
>>
Matrix Base, FWD, Automatic
>>
Repair and Diagnosis
>>
External Pages
>>
Different variant/trim
>>
Section 4 (Engine Control System (SFI) - Diagnostics (2ZZ-GE))
>>
DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1)
>>
Typical Malfunction Thresholds
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Typical Malfunction Thresholds
WARNING:
This page is about a different variant/trim than selected.
TYPICAL MALFUNCTION THRESHOLD
Detection Criteria
Threshold
Catalyst deterioration level
0.55 or more
Number of times detection
3 times