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Home >> Toyota >> 2013 >> Matrix Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2ZR-FE) (Diagnostic Codes (P0010-P0420) >> 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

Monitor runs whenever following DTCs not present P0010 (VVT Oil Control Valve)
P0011 (VVT System - Advance)
P0012 (VVT System - Retard)
P0013 (Exhaust VVT Oil Control Valve)
P0014 (Exhaust VVT System - Advance)
P0015 (Exhaust VVT System - Retard)
P0016 (VVT System - Misalignment)
P0017 (Exhaust VVT System - Misalignment)
P0031, P0032 (Air Fuel Ratio Sensor Heater - Sensor 1)
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 Engine Coolant Temperature for Closed Loop Fuel Control)
P0335 (Crankshaft Position Sensor)
P0340, P0342, P0343 (Camshaft Position Sensor)
P0351, P0352, P0353, P0354 (Igniter)
P0365, P0367, P0368 (Exhaust Camshaft Position Sensor)
P0500 (Vehicle Speed Sensor)
P219A (Air Fuel Ratio Imbalance)
Fuel system status Closed-loop
Battery voltage 11 V or more
Either of following conditions 1 or 2 set -
1. Engine speed Less than 720 rpm
2. Engine load 13% or more
Catalyst monitor No executed
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