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Home >> Toyota >> 2007 >> Land Cruiser >> Repair and Diagnosis >> Engine Performance >> Engine Control System (2UZ-FE) >> 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

The monitor will run whenever these DTCs are not present P0011 (VVT System 1 - Advance)
P0012 (VVT System 1 - Retard)
P0021 (VVT System 2 - Advance)
P0022 (VVT System 2 - Retard)
P0031, P0032, P0051, P0052 (A/F sensor heater - Sensor 1)
P0037, P0038, P0057, P0058 (HO2 sensor Heater - Sensor 2)
P0100 - P0103 (MAF meter)
P0115-P0118(ECT sensor)
P0120 - P0223, P2135 (TP sensor)
P0125 (Insufficient ECT for closed loop)
P0136, P0156 (HO2 Sensor - Sensor 2)
P0171, P0172 (Fuel system)
P0300 - P0308 (Misfire)
P0335 (CKP sensor)
P0351 - P0358 (Igniter)
P0500 (VSS)
P2196, P2198 (A/F sensor - rationality)
P2237, P2240 (A/F sensor - open)
P2440 (A/R control valve stuck open)
P2441 (A/R control valve stuck close)
P2444 (AIP stuck ON)
P2445 (AIP stuck OFF)
P2A00, P2A03 (A/F sensor - slow response)
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 coefficient 0.75 or more
Idle OFF
Engine RPM Less than 3,200 rpm
A/F sensor Activated
Fuel system status Closed-loop
Engine load 10 to 70%
All of the following conditions are met Conditions 1, 2 and 3
1.MAF 6 to 25 g/sec. (Varies with engine RPM)
2. Front catalyst temperature (estimated) 620 to 830°C (770 to 1,526°F) (Varies with MAF)
3. Rear catalyst temperature (estimated) 410 to 830°C (770 to 1,526°F) (Varies with MAF)
Rear HO2S heater monitor Completed
Shift position 4th or more