LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Scion
>>
2006
>>
xA Standard
>>
Repair and Diagnosis (Single Page)
>>
Engine Performance
>>
Engine Control Systems
>>
Engine Control System (1NZ-FE)
>>
SFI System
>>
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
TYPICAL MALFUNCTION THRESHOLDS
Rear HO2 sensor locus length
0.5 V or more (varies with A/F sensor locus length)
Frequency of the monitor
2 times