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Home >> Lexus >> 2021 >> LC 500h >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (5 Of 9) >> SFI System >> DTC P0401-9C: Exhaust Gas Recirculation "A" Low / Insufficient Flow [01/2017 - 09/2018] >> Typical Enabling Conditions

Typical Enabling Conditions

Monitor runs whenever the following DTCs are not stored P0010, P0020 (VVT oil control solenoid)
P0011, P0021 (VVT system - advance)
P0012, P0022 (VVT system - retard)
P0013, P0023 (Exhaust VVT oil control solenoid)
P0014, P0024 (Exhaust VVT system - advance)
P0015, P0025 (Exhaust VVT system - retard)
P0016, P0018 (VVT system - misalignment)
P0017, P0019 (Exhaust VVT system - misalignment)
P0031, P0032, P0051, P0052, P101D, P103D (Air fuel ratio sensor (sensor 1) heater)
P0101, P0102, P0103 (Mass air flow meter)
P0106, P0107, P0108 (Manifold absolute pressure)
P0111, P0112, P0113 (Intake air temperature sensor)
P0116, P0117, P0118 (Engine coolant temperature sensor)
P0125 (Insufficient coolant temperature for closed loop fuel control)
P011B (Engine coolant temperature/intake air temperature sensor correlation)
P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor)
P014C, P014D, P014E, P014F, P015A, P015B, P015C, P015D, P2195, P2196, P2197, P2198, P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255, P2256 (Air fuel ratio sensor (sensor 1))
P0327, P0328, P0332, P0333 (Knock control sensor)
P0351, P0352, P0353, P0354, P0355, P0356 (Igniter)
P0335, P0337, P0338 (Crankshaft position sensor)
P0340, P0342, P0343, P0345, P0347, P0348 (VVT sensor)
P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust VVT sensor)
P0403 (EGR control circuit)
P0657, P0658, P2102, P2103, P2111, P2112, P2119 (Throttle actuator)
P0171, P0172, P0174, P0175 (Fuel system)
P106A (Evaporative emission control system pressure sensor - manifold pressure sensor correlation)
P11EA, P11EB, P11EC, P11ED, P11EE, P11EF, P11F0, P11F1, P219A, P219B, P219C, P219D, P219E, P219F, P21A0, P21A1 (Air-fuel ratio imbalance)
P2228, P2229 (Atmospheric pressure sensor)
Time after engine started 3 seconds or more
Time after engine fuel cut 2245 msec. or more
Engine speed 950 to 1600 rpm
Vehicle speed 21 km/h (13 mph) or more
Engine coolant temperature 75°C (167°F) or higher
Auxiliary battery voltage 11 V or higher
Intake air temperature -10°C (14°F) or higher
Atmospheric pressure 76 kPa(abs) [11.02 psi(abs)] or higher