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Home >> Toyota >> 2009 >> Matrix S, FWD, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Control System (2ZR-FE)) >> SFI System >> DTC P0171 System Too Lean (Bank 1); DTC P0172 System Too Rich (Bank 1) >> Typical Enabling Conditions
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Typical Enabling Conditions

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Fuel-trim 

TYPICAL ENABLING CONDITIONS CHART

Monitor runs whenever following DTCs not present P0010 (Camshaft timing oil control valve)
P0011 (VVT System 1 - Advance)
P0012 (VVT System 1 - Retard)
P0031, P0032 (Air fuel ratio sensor heater - Sensor 1)
P0102 - P0103 (Mass air flow meter)
P0115 - P0118 (Engine coolant temperature sensor)
P0120 - P0223, P2135 (Throttle position sensor)
P0125 (Insufficient engine coolant temperature for closed loop)
P0335 (Crankshaft position sensor)
P0340 (Camshaft position sensor)
P0351 - P0354 (Igniter)
P0500 (Vehicle speed sensor)
Fuel system status Closed-loop
Battery voltage 11 V or more
Either of following conditions 1 or 2 set -
1. Engine RPM 720 rpm or less
2. Intake air amount per revolution 0.16 g/rev or more
Catalyst monitor No executed