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Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Engine Control System (3UR-FBE) - Diagnostic Codes (3 Of 6)) >> SFI System >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1); DTC P0430: Catalyst System Efficiency Below Threshold (Bank 2) [10/2016 - 08/2018] >> Typical Enabling Conditions

Typical Enabling Conditions

WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
Monitor runs whenever following DTCs not present P0010, P0020 (VVT Oil control valve)
P0011, P0021 (VVT System - Advance)
P0012, P0022 (VVT System - Retard)
P0013, P0023 (Exhaust VVT Oil control valve)
P0014, P0024 (Exhaust VVT System - Advance)
P0015, P0025 (Exhaust VVT System - Retard)
P0016, P0018 (VVT System - Misalignment)
P0017, P0019 (Exhaust VVT System - Misalignment)
P0031, P0032, P0051, P0052, P101D, P103D (Air fuel ratio sensor heater)
P0037, P0038, P0057, P0058, P102D, P105D (Rear oxygen sensor heater)
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 coolant temperature for closed loop fuel control)
P0136, P0137, P0138, P0139, P013A, P013C, P0156, P0157, P0158, P0159, P0607 (Rear oxygen sensor)
P0171, P0172, P0174, P0175 (Fuel system)
P0300 - P0308 (Misfire)
P0335 (Crankshaft position sensor)
P1340 (Camshaft position sensor)
P0340, P0342, P0343, P0345, P0347, P0348 (VVT sensor)
P0351 - P0358 (Igniter)
P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust VVT sensor)
P0412, P0415, P0418, P0419, P1613, P1614 (Secondary air injection system control)
P219A, P219B, P219C, P219D, P219E, P219F, P21A0, P21A1, P21A2, P21A3 (Air-fuel ratio imbalance)
P2440 - P2447 (Secondary air injection system)
P0500 (Vehicle speed sensor)
P014C, P014D, P014E, P014F, P015A, P015B, P015C, P015D, P2195, P2196, P2197, P2198, P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255, P2256 (Air fuel ratio sensor)
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 (570 mmHg) or more
Idling OFF
Engine speed Less than 3200 rpm
A/F sensor status Activated
Fuel system status Closed loop
Engine load 10 to 75%
All of following conditions (a), (b) and (c) met -
(a) Mass air flow rate 7.5 to 75 gm/sec
(b) Estimated front catalyst temperature 555 to 820°C (1031 to 1508°F)
(c) Estimated rear catalyst temperature 400 to 700°C (752 to 1292°F)
Shift position 4th or higher