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Home >> Lexus >> 2009 >> IS F >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control (SFI) System (Diagnostic Codes (P0230-P1276)) >> 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

TYPICAL ENABLING CONDITIONS

Monitor runs whenever following DTCs not present P0010, P0020, P2614, P1023, P1360, P1361, P1362, P1363, P1364, P1365, P1366, P1367 (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)
P0136, P0137, P0138, P0139 (Heated oxygen sensor bank 1)
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)
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 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 5 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)
Rear heated oxygen sensor monitor Completed
Shift position 4th or higher