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Home >> Toyota >> 2010 >> FJ Cruiser 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (Diagnostic Codes (P0340-P1603) >> 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 (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 (Heated oxygen sensor heater)
P0102, P0103 (Mass air flow meter)
P0115, P0117, P0118 (Engine coolant temperature sensor)
P0120 - P0123, P0220, P0222, P0223, P2135 (Throttle position sensor)
P0125 (Insufficient engine coolant temperature for closed loop fuel control)
P0136 - P0139, P0156 - P0159, P0607 (Heated oxygen sensor)
P014C - P014F, P015A - P015D, P2195 - P2198, P2237 - P2242, P2252, P2253, P2255, P2256 (Air fuel ratio sensor)
P0171, P0172, P0174, P0175 (Fuel system)
P0301 - P0306 (Misfire)
P0335 (Crankshaft position sensor)
P0340, P0342, P0343, P0345, P0347, P0348 (VVT sensor)
P0351 - P0356 (Igniter)
P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust VVT sensor)
P0500 (Vehicle speed sensor)
Battery voltage 11 V or more
IAT -10°C (14°F) or more
ECT 75°C (167°F) or more
Atmospheric pressure 76 kPa (570 mmHg) or more
Idling OFF
Engine rpm Less than 3200 rpm
A/F sensor status Activated
Fuel system status Closed loop
Engine load 10 to 70%
All of the following conditions are met Condition 1, 2 and 3
1. MAF 5 to 75 g/sec
2. Front catalyst temperature (estimated) 690 to 860°C (1274 to 1580°F)
3. Rear catalyst temperature (estimated) 500 to 900°C (932 to 1652°F)
Shift position 4th or higher