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Home >> Audi >> 2015 >> A4 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 379 (Engine Control System (Diagnostic Codes (P0010-P0172))) >> SFI System >> DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1) [08/2013 - ] >> Typical Enabling Conditions

Typical Enabling Conditions

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
Monitor runs whenever the following DTCs are not stored P0010 (VVT oil control valve)
P0011 (VVT system - advance)
P0012 (VVT system - retard)
P0016 (VVT system - misalignment)
P0031, P0032, P101D (Air fuel ratio sensor heater)
P0102, P0103 (Mass air flow meter)
P0107, P0108 (Manifold absolute pressure)
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)
P0401 (EGR system (closed))
P219A (Air fuel ratio imbalance)
Fuel system status Closed loop
Auxiliary battery voltage 11 V or higher
Either of the following conditions is met 1 or 2
1. Engine speed Less than 1100 rpm
2. Engine load 10% or higher
Catalyst monitor Not executed
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