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Home >> Toyota >> 2008 >> Highlander Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Control System (Hybrid)) >> SFI System >> 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

WARNING: This page is about a different variant/trim than selected.
TYPICAL ENABLING CONDITIONS

Monitor will run whenever this DTC is 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 (Oxygen sensor heater - Sensor 2)
P0100 - P0103 (Mass airflow meter)
P0115 - P0118 (Engine coolant temperature sensor)
P0120 - P0223, P2135 (Throttle position sensor)
P0125 (Insufficient engine coolant temperature for closed loop)
P0136, P0156 (Oxygen sensor - sensor 2)
P0171, P0172 (Fuel system)
P0300 - P0308 (Misfire)
P0335 (Crankshaft position sensor)
P0340, P0341 (VVT sensor)
P0351 - P0356 (Igniter)
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 75°C (167°F) or more
Atmospheric pressure coefficient 0.75 or more
Idling OFF
Engine RPM Less than 3200 rpm
A/F sensor status Activated
Fuel system status Closed loop
Engine load 5% or more and less than 80%
All of the following conditions (a), (b) and (c) are met -
(a) Mass air flow rate 10 to 64 g/sec.
(b) Estimated front catalyst temperature 530 to 660°C (986 to 1220°F)
(c) Estimated rear catalyst temperature 430 to 675°C (806 to 1247°F)
EVAP system monitor The monitor has not run yet or the vacuum introduction has been completed
Air fuel ratio sensor monitor Completed
Rear heated oxygen sensor heater monitor Completed