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Home >> Scion >> 2009 >> xB Automatic >> Repair and Diagnosis >> Engine Performance >> System >> 2AZ-FE Engine Control System - DTC P0300 - P0607 >> DTC P0420 Catalyst System Efficiency Below Threshold (Bank1) >> Typical Enabling Conditions
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Typical Enabling Conditions

TYPICAL ENABLING CONDITIONS

Monitor runs whenever following DTCs not present P0010 (OCV bank 1)
P0011 (VVT system 1 - advance)
P0012 (VVT system 1 -retard)
P0016 (VVT system 1 - misalignment)
P0031, P0032 (A/F sensor heater)
P0037, P0038 (HO2 sensor heater)
P0100 - P0103 (MAF meter)
P0115 - P0118 (ECT sensor)
P0120 - P2135 (Throttle position sensor)
P0125 (Insufficient ECT for closed loop)
P0136 - P0139 (HO2 sensor)
P0171, P0172 (Fuel system)
P0301 - P0304 (Misfire)
P0335 (Crankshaft position sensor)
P0351 - P0354 (Ignitor)
P0500 (VSS)
P0606 (HO2 sensor)
P2195, P2196 (A/F sensor)
P2237 - P2253 (A/F sensor)
P2A00 (A/F 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 coefficient 0.75 or more
Idling OFF
Engine RPM Less than 4000 rpm
Air fuel ratio sensor status Activated
Fuel system status Closed loop
Engine load 10 to 80%
All of the following conditions are met Condition 1, 2 and 3
1. Mass air flow rate 2.5 to 50 g/sec
2. Front catalyst temperature (estimated) A/T models: 685 to 840°C (1265 to 1544°F)
M/T models: 665 to 840°C (1229 to 1544°F)
3. Rear catalyst temperature (estimated) 400 to 770°C (752 to 1418°F)
Rear Heated oxygen sensor monitor Completed
Shift position A/T models: 4th or higher
M/T models: 3th or higher