LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2009 >> GX 470 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control (SFI) System (Diagnostic Codes (P0010-P0505)) >> 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
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Typical Enabling Conditions

Monitor will run whenever these DTCs are not present P0010, P0020 (VVT Oil Control Valve)
P0011, P0021 (VVT System - Advance)
P0012, P0022 (VVT System - Retard)
P0016, P0018 (VVT System - Misalignment)
P0031, P0032, P0051, P0052 (Air Fuel Ratio Sensor Heater)
P0100, P0102, P0103 (Mass Air Flow Sensor)
P0115, P0117, P0118 (Engine Coolant Temperature Sensor)
P0125 (Insufficient Coolant Temperature for Closed Loop Fuel Control)
P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135 (Throttle Position Sensor)
P0335 (Crankshaft Position Sensor)
P1340 (Camshaft Position Sensor)
P0340, P0345 (VVT Sensor)
P0351 - P0358 (Igniter)
P0412, P0418, P1613 (Secondary Air Injection System Control)
P1441, P1442, P1444, P1445, P2440, P2441, P2444, P2445 (Secondary Air Injection System)
P0500 (Vehicle Speed Sensor)
Battery voltage 11 V or more
Fuel system status Closed loop
Either of following conditions is met Condition (a) or (b)
(a) Engine RPM Less than 1000 RPM
(b) Intake air amount per revolution 0.26 g/rev. or more
Catalyst monitor Not executed
scientia non olet · About LEMON Manuals