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Home >> Toyota >> 2004 >> Matrix Base, FWD, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 471 (Engine Controls - Diagnostics) >> Circuit Inspection >> DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1) >> Typical Enabling Conditions
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Typical Enabling Conditions

WARNING: This page is about a different car, the 2004 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE ENABLING CONDITION

The monitor will run whenever the following DTCs are not present See PRE-CHECK 
Accumulated time that the following conditions are met 30 sec.
Battery voltage 11 V or more
IAT -10 °C (14°F) or more
Idle OFF
MAF 8 to 35 g/sec.
RPM Less than 4,500 RPM
ECT 75° C (167°F) or more
Estimated catalyst temperature Up stream catalyst: 550 to 900°C (1,022 to 1,652°F)
Estimated catalyst temperature Down stream catalyst: 550 to 900°C (1,022 to 1,652°F)
Fuel system status Closed Loop
AF sensor voltage 3 to 3.5 V