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Home >> Lexus >> 2005 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> System >> SFI System - Diagnostics >> DTC P0420, P0430: Catalyst System Efficiency Below Threshold (Bank 1)/(Bank 2) >> Typical Enabling Conditions

Typical Enabling Conditions

TYPICAL ENABLING CONDITIONS

Monitor will run whenever these DTCs are not present See LIST OF DISABLE A MONITOR 
Accumulated time that all of following conditions are met 20 seconds
Battery voltage 11 V or more
IAT -10°C (14°F) or more
Idle status OFF
MAF 8 to 45 g/sec.
Engine RPM Less than 4,000 rpm
ECT 75°C (167°F) or more
Fuel system status Closed loop
Estimated catalyst temperature Both of the following conditions 1 and 2 are met
1. Up stream catalyst temperature 450 to 850°C (842 to 1,562°F)
2. Down stream catalyst temperature 450 to 850°C (842 to 1,562°F)