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Home >> Lexus >> 2014 >> GX 460 Luxury >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0300-P0617)) >> SFI System >> DTC P0401: Exhaust Gas Recirculation Flow Insufficient Detected [08/2013 - ] >> 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 1 second or more
Engine speed 1200 to 1800 RPM
Vehicle speed 20 km/h (12.5 mph) or more
Engine speed change (per 65 msec.) -40 to 10 RPM
Time after engine load becomes stable (Brake, lock-up) More than 1 sec
Shift position Except P or N
ECT 75°C (167°F) or higher
Battery voltage 11 V or higher
IAT -10°C (14°F) or higher
Atmospheric pressure 76 kPa (570 mmHg) or higher