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Home >> Lexus >> 2013 >> IS F >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0340 - P1366)) >> 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

Monitor runs whenever following DTCs not present P0010, P0020, P1023, P1360, P1361, P1362, P1363, P1364, P1365, P1366, P1367, P2614 (Motor drive VVT system control module bank 1, 2)
P0011, P0021 (VVT system bank 1, 2 - advance)
P0012, P0022 (VVT system bank 1, 2 - retard)
P0013, P0023 (Exhaust oil control valve bank 1, 2)
P0014, P0024 (Exhaust VVT system bank 1, 2 - advance)
P0015, P0025 (Exhaust VVT system bank 1, 2 - retard)
P0016, P0018 (VVT system bank 1, 2 - misalignment)
P0017, P0019 (Exhaust VVT system bank 1, 2 - misalignment)
P0031, P0032, P0051, P0052 (Air fuel ratio sensor heater)
P0037, P0038, P0057, P0058 (Heated 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 engine coolant temperature for closed loop fuel control)
P0136, P0137, P0138, P0139 (Heated oxygen sensor bank 1)
P014C, P014D, P014E, P014F (Air fuel ratio sensor - slow response)
P015A, P015B, P015C, P015D (Air fuel ratio sensor - delayed response)
P0156, P0157, P0158, P0159 (Heated oxygen sensor bank 2)
P0171, P0172, P0174, P0175 (Fuel system)
P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 (Misfire)
P0335 (Crankshaft position sensor)
P0340, P0342, P0343, P0345, P0347, P0348 (VVT sensor)
P0351, P0352, P0353, P0354, P0355, P0356, P0357, P0358 (Igniter)
P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust VVT sensor)
P0500 (Vehicle speed sensor)
P0607 (Heated oxygen sensor - sensor 2)
P1340 (Camshaft position sensor)
P2195, P2196, P2197, P2198 (Air fuel ratio sensor - rationality)
P2237, P2240 (Air fuel ratio sensor - open)
P2238, P2241, P2252, P2255 (Air fuel ratio sensor - low impedance)
P2239, P2242, P2253, P2256 (Air fuel ratio sensor - high impedance)
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 76 kPa(abs) [570 mmHg(abs)] or more
Idling Off
Engine speed Less than 3200 rpm
Air fuel ratio sensor status Activated
Fuel system status Closed loop
Engine load 10% or more, and less than 70%
All of the following conditions are met Condition 1, 2 and 3
1. Mass air flow rate 5 g/sec. or more, and less than 75 g/sec.
2. Front catalyst temperature (estimated) 580°C (1076°F) or more, and less than 820°C (1508°F)
3. Rear catalyst temperature (estimated) 580°C (1076°F) or more, and less than 820°C (1508°F)
Shift position 4th or higher