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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R Spec V >> Repair and Diagnosis >> External Pages >> Different car >> Section 1917 (Engine Control System (2AZ-FE)) >> SFI System >> 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 2006 Scion tC. However, it is still accessible from the selected car via links, so may be relevant.
TYPICAL ENABLING CONDITIONS

Accumulated time that all following conditions met 30 seconds or more
Battery voltage 11 V or more
Intake air temperature -10°C (14°F) or more
Idle OFF
Mass air flow rate 6 to 35 g/sec
Engine RPM Less than 4,500 rpm
Engine coolant temperature sensor 75°C (167°F) or more
Fuel system status Closed Loop
Rich experience Yes
A/F sensor Activated
HO2 sensor Activated
Estimated catalyst temperature Both of following conditions 1 and 2 met
1. Up stream catalyst temperature 550 to 900°C (1,022 to 1,652°F)
1. Down stream catalyst temperature 550 to 900°C (1,022 to 1,652°F)