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Home >> Toyota >> 2014 >> Sienna Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0101-P0390)) >> SFI System >> DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1); DTC P0174: System Too Lean (Bank 2); DTC P0175: System Too Rich (Bank 2) [08/2013 - ] >> Typical Enabling Conditions
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Typical Enabling Conditions

FUEL-TRIM

Monitor runs whenever following DTCs not stored P0010, P0020 (Camshaft timing oil control valve bank 1, 2)
P0011, P0021 (VVT system bank 1, 2 - advance)
P0012, P0022 (VVT System bank 1, 2 - retard)
P0013, P0023 (Exhaust oil control valve bank 1, 2)
P0014, P0024 (Exhaust VVT system bank 1, 2 - advance)
P0015, P0025 (Exhaust VVT system bank 1, 2 - retard)
P0016, P0018 (VVT system - misalignment)
P0017, P0019 (Exhaust VVT system bank 1, 2 - misalignment)
P0031, P0032, P0051, P0052, P101D, P103D (Air fuel ratio sensor heater)
P0102, P0103 (Mass air flow meter)
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)
P0335 (Crankshaft position sensor)
P0340, P0342, P0343, P0345, P0347, P0348 (VVT sensor)
P0351, P0352, P0353, P0354, P0355, P0356 (Igniter)
P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust VVT sensor)
P0500 (Vehicle speed sensor)
P219A, P219B (Air-fuel ratio imbalance)
Fuel system status Closed loop
Battery voltage 11 V or higher
Either of following conditions 1 or 2 set -
1. Engine speed Less than 1100 rpm
2. Intake air amount per revolution 0.22 g/rev or more
Catalyst monitor Not executed
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