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Home >> Lexus >> 2008 >> ES 350 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (2 Of 4) >> 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

The monitor will run whenever these DTCs are not present P0010, P0020 (VVT VSV1, 2), P0011, P0012 (VVT System-Advance, Retard), P0021, P0022(VVT System2-Adavance, Retard), P0031, P0031, P0032, P0051, P0052 (A/F Sensor heater Sensor 1), 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 following condition 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
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