LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2017 >> NX 300h >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (3 Of 6) >> SFI System >> DTC P0401: Exhaust Gas Recirculation Flow Insufficient Detected [09/2015 - ] >> Typical Enabling Conditions
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Typical Enabling Conditions

Monitor runs whenever following DTCs are not stored P0010 (Camshaft timing oil control valve)
P0011 (VVT system - advance)
P0012 (VVT system - retard)
P0016 (VVT system - misalignment)
P0031, P0032, P101D (Air fuel ratio sensor heater)
P0102, P0103 (Mass air flow meter)
P0106, P0107, P0108 (Manifold absolute pressure)
P0112, P0113 (Intake Air Temperature Sensor)
P0115, P0117, P0118 (Engine coolant temperature sensor)
P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135 (Throttle position sensor)
P0125 (Insufficient coolant temperature for closed loop fuel control)
P014C, P014D, P015A, P015B, P2195, P2196, P2237, P2238, P2239, P2252, P2253 (Air fuel ratio sensor)
P0171, P0172 (Fuel system)
P0327, P0328 (Knock Sensor)
P0335 (Crankshaft position sensor)
P0340 (Camshaft position sensor)
P0340, P0342, P0343 (VVT sensor)
P0351, P0352, P0353, P0354 (Igniter)
P106A (Canister Pressure Sensor - Manifold Pressure Sensor correlation)
P219A, P219C, P219D, P219E, P219F (Air-fuel ratio imbalance)
Time after engine started 3 seconds or more
Time after engine fuel cut 2300 msec or more
Engine speed 950 to 1600 rpm
Vehicle speed 20 km/h (12.5 mph) or more
Engine coolant temperature 73°C (163°F) or higher
Auxiliary battery voltage 11 V or higher
Intake air temperature -10°C (14°F) or higher
Atmospheric pressure 76 kPa(abs) [570 mmHg(abs)] or higher