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Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - SFI System Diagnostics (2 Of 4) >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430 Catalyst System Efficiency Below Threshold (Bank 2) >> Typical Enabling Conditions
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Typical Enabling Conditions

TYPICAL ENABLING CONDITIONS CHART

Monitor runs whenever following DTCs not present P0011 (VVT System 1 - Advance)
P0012 (VVT System 1 - Retard)
P0021 (VVT System 2 - Advance)
P0022 (VVT System 2 - Retard)
P0031, P0032, P0051, P0052 (Air fuel ratio sensor heater - Sensor 1)
P0037, P0038, P0057, P0058 (Heated oxygen sensor Heater - Sensor 2)
P0102, P0103 (Mass air flow meter)
P0115 - P0118 (Engine coolant temperature sensor)
P0120 - P0223, P2135 (Throttle position sensor)
P0125 (Insufficient engine coolant temperature for closed loop)
P0136, P0156 (Heated oxygen Sensor - Sensor 2)
P0171, P0172, P0174, P0175 (Fuel system)
P0300 - P0308 (Misfire)
P0335 (Crankshaft position sensor)
P0340 (VVT sensor)
P0351 - P0358 (Igniter)
P0500 (Vehicle speed sensor)
P2196, P2198 (Air fuel ratio sensor - rationality)
P2A00, P2A03 (Air fuel ratio sensor - slow response)
Battery voltage 11 V or more
Intake air temperature -10°C(14°F) or more
Engine coolant temperature sensor 75°C (167°F) or more
Atmospheric pressure coefficient 75 kPa (570 mmHg) or more
Idling OFF
Engine RPM Less than 3200 rpm
Air fuel ratio sensor status Activated
Fuel system status Closed loop
Engine load 10 to 70%
All of the following conditions are met Condition 1, 2 and 3
1 Mass air flow rate 10 to 75 g/sec
2 Front catalyst temperature (estimated) 580 to 820°C (1076 to 1508°F)
3 Rear catalyst temperature (estimated) 580 to 820°C (572 to 1508°F)
EVAP system monitor The monitor has not run yet or the vacuum introduction has been completed
Shift position 4th or higher