LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Toyota
>>
2004
>>
Matrix Base, FWD, Standard
>>
Repair and Diagnosis (Single Page)
>>
Engine Performance
>>
System
>>
Engine Control System (SFI) - Diagnostics (1ZZ-FE)
>>
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
MALFUNCTION THRESHOLDS
Detection Criteria
Threshold
Catalyst deterioration level
2WD: 0.6 or more
Catalyst deterioration level
4WD: 0.25 or more
Number of times detection
2WD: 3 times
Number of times detection
4WD: 2 times