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Home >> Lexus >> 2011 >> CT 200h >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010-P0420)) >> SFI System >> DTC P0401: Exhaust Gas Recirculation Flow Insufficient Detected >> Typical Enabling Conditions
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Typical Enabling Conditions

Monitor runs whenever following DTCs are not present None
Time after engine started 3 seconds or more
Time after engine fuel cut 2000 msec or more
Engine speed 950 to 1600 rpm
Vehicle speed 20 km/h (12.5 mph) or more
Engine speed change -20 to 20 rpm
Time after engine load becomes stable (HVAC, Brake, Lockup) More than 1.2 seconds
Engine coolant temperature 70°C (158°F) or higher
Auxiliary battery voltage 11 V or higher
Intake air temperature -10°C (14°F) or higher
Atmospheric pressure 76 kPa (750 mmHg) or higher