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Home >> Toyota >> 2013 >> Matrix Base, Automatic Trans >> Repair and Diagnosis (Single Page) >> External Pages >> Different variant/trim >> Section 18 (Engine Control System (2AZ-FE) (Diagnostic Codes (P0010-P0456))) >> SFI System >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1) >> Typical Enabling Conditions
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Typical Enabling Conditions

WARNING: This page is about a different variant/trim than selected.
Monitor runs whenever following DTCs are not present P0010 (VVT Oil Control Valve)
P0011 (VVT System - Advance)
P0012 (VVT System - Retard)
P0016 (VVT System - Misalignment)
P0031, P0032 (Air Fuel Ratio Sensor Heater - Sensor 1)
P0037, P0038 (Heated Oxygen Sensor Heater - Sensor 2)
P0102, P0103 (Mass Air Flow Meter)
P0115, P0117, P0118 (Engine Coolant Temperature Sensor)
P0120, P0121 P0122, P0123, P0220, P0222, P0223, P2135 (Throttle Position Sensor)
P0125 (Insufficient Engine Coolant Temperature for Closed Loop Fuel Control)
P0136, P0137, P0138, P0139 (Oxygen sensor - Sensor 2)
P014C, P014D, P015A, P015B, P2195, P2196, P2237, P2238, P2239, P2252, P2253 (Air Fuel Ratio Sensor - Sensor 1)
P0171, P0172 (Fuel System)
P0301, P0302, P0303, P0304 (Misfire)
P0335 (Crankshaft Position Sensor)
P0340 (Camshaft Position Sensor)
P0351, P0352, P0353, P0354 (Igniter)
P0500 (Vehicle Speed Sensor)
P0607 (Heated Oxygen Sensor - Sensor 2)
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 76 kPa(abs) (570 mmHg(abs)) or more
Idle Off
Engine speed Less than 4000 rpm
Air fuel ratio sensor Activated
Fuel system status Closed loop
Engine load 10% or more, and less than 80%
All of the following conditions are met Condition 1, 2 and 3
1. Mass air flow rate 2.5 g/sec or more, and less than 50 g/sec
2. Front catalyst temperature (estimated) 620°C (1148°F) or more, and less than 840°C (1544°F)
3. Rear catalyst temperature (estimated) 400°C (752°F) or more, and less than 770°C (1418°F)
Shift position Automatic transaxle: 4th or higher
Manual transaxle: 3rd or higher