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Home >> Toyota >> 2008 >> Avalon XLS >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2GR-FE) - DTC P0171 - P0606 >> 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) >> Typical Enabling Conditions
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Typical Enabling Conditions

Fuel-trim: 

TYPICAL ENABLING CONDITIONS CHART

The monitor will run whenever these DTCs are not present P0010, P0020 (VVT VSV1, 2), P0011, P0012 (VVT System-Advanced, Retarded), P0021, P0022 (VVT System 2-Adavanced, Retarded), P0031, P0031, P0032, P0051, P0052 (A/F Sensor heater Sensor 1), P0100, P0101, P0102, P0103 (MAF Sensor), P0115, P0116, P0117, P0118 (ECT Sensor), P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135 (TP Sensor), P0125 (Insufficient ECT for Closed Loop), P0335 (CKP Sensor), P0340, P0342, P0343, P0345 (VVT Sensor 1, 2), P0351, P0352, P0353, P0354, P0356 (Ignitor), P0500 (VSS),
Fuel system status Closed-loop
Battery voltage 11 V or more
Either of following conditions is met Condition 1 or 2
1. Engine RPM Less than 1,100 rpm
2. Intake air amount per revolution 0.22 g/rev or more