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Home >> Lexus >> 2007 >> LX 470 >> Repair and Diagnosis >> Engine Performance >> Engine Control System (2UZ-FE) >> SFI System >> 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

Typical Enabling Conditions

TYPICAL ENABLING CONDITIONS

Monitor will run whenever these DTCs are not present P0010, P0020 (OCV Bank 1, 2)
P0011 (VVT System 1 - Advance)
P0012 (VVT System 1 - Retard)
P0021 (VVT System 2 - Advance)
P0022 (VVT System 2 - Retard)
P0031, P0032, P0051, P0052 (A/F sensor heater - Sensor 1)
P0100 - P0103 (MAF meter)
P0115 - P0118 (ECT sensor)
P0120 - P0223, P2135 (TP sensor)
P0125 (Insufficient ECT for closed loop)
P0335 (CKP sensor)
P0351 - P0358 (Igniter)
P0500 (VSS)
P2440 (A/R control valve stuck open)
P2441 (A/R control valve stuck close)
P2444 (AIP stuck ON)
P2445 (AIP stuck OFF)
Battery voltage 11 V or more
Fuel system status Closed loop
Either of following conditions (a) or (b) is met -
(a) Engine RPM Less than 1,000 rpm
(b) Intake air amount per revolution 0.26 g/rev. or more
Catalyst monitor Not executed
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