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Home >> Lexus >> 2022 >> GX 460 Premium >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes) (3 Of 7) >> SFI System >> DTC P0400: Exhaust Gas Recirculation Flow; DTC P0401: Exhaust Gas Recirculation Flow Insufficient Detected; DTC P0402: Exhaust Gas Recirculation Flow Excessive Detected [08/2022 - ] >> Typical Enabling Conditions
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Typical Enabling Conditions

Monitor runs whenever following DTCs are not present P0010, P0020 (VVT oil control valve)
P0011, P0021 (VVT system - Advance)
P0012, P0022 (VVT system - Retard)
P0013, P0023 (Exhaust VVT oil control valve)
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 heater)
P006A, P0107, P0108 (Manifold absolute pressure)
P0102, P0103 (Mass air flow meter)
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, P014E, P014F, P015A, P015B, P015C, P015D, P2195, P2196, P2197, P2198, P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255, P2256 (Front oxygen/Air fuel ratio sensor)
P0171, P0172, P0174, P0175 (Fuel system)
P0327, P0328, P0332, P0333, P032C, P032D, P033C, P033D (Knock sensor)
P0335 (Crankshaft position sensor)
P0340, P0342, P0343, P0345, P0347, P0348 (VVT sensor)
P1340 (Camshaft position sensor)
P0351 - P0358 (Igniter)
P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust VVT sensor)
P0412, P0418, P1613 (Secondary air injection system control)
P0416, P0417, P2440, P2441, P2442, P2443, P2444, P2445 (Secondary air injection system)
P0500 (Vehicle speed sensor)
P106A (Evap emission control system Pressure Sensor)
P219A, P219B, P219C, P219D, P219E, P219F, P21A0, P21A1, P21A2, P21A3 (Air fuel ratio sensor - imbalance)
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
Engine coolant temperature 75°C (167°F) or higher
Battery voltage 11 V or higher
Intake air temperature -10°C (14°F) or higher
Atmospheric pressure 76 kPa(abs) [11 psi(abs)] or higher