LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Toyota
>>
2004
>>
Corolla LE, Standard
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System (SFI) - Diagnostics
>>
DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1)
>>
Component Operating Range
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Component Operating Range
COMPONENT OPERATING RANGE
Parameter
Standard Value
Catalyst deterioration level (heated oxygen sensor signal length)
0 to 0.1