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Home >> Toyota >> 2015 >> Highlander LE Plus, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 42 (SFI System [1AR-FE] - Diagnostic Codes - (Except Hybrid) (6 Of 8)) >> SFI System >> DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1) [12/2013 - 11/2016] >> Typical Enabling Conditions

Typical Enabling Conditions

WARNING: This page is about a different variant/trim than selected.
Monitor runs whenever the following DTCs are not stored P0010 (Camshaft timing oil control valve)
P0011 (VVT system - advance)
P0012 (VVT system - retard)
P0013 (Exhaust camshaft timing oil control valve)
P0014 (Exhaust VVT system - advance)
P0015 (Exhaust VVT system - retard)
P0016 (VVT system - misalignment)
P0017 (Exhaust VVT system - misalignment)
P0031, P0032, P101D (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 (Camshaft position sensor)
P0351, P0352, P0353, P0354 (Igniter)
P0365, P0367, P0368 (Exhaust camshaft position sensor)
P0500 (Vehicle speed sensor)
P219A, P219C, P219D, P219E, P219F (Air-fuel ratio imbalance)
Fuel system status Closed loop
Battery voltage 11 V or higher
Either of the following conditions is met 1 or 2
1. Engine speed Less than 800 rpm
2. Engine load 16.25% or higher
Catalyst monitor Not executed
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