LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> RX 350 FWD >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 17 (Engine Control System) >> 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) >> Monitor Strategy
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Monitor Strategy

WARNING: This page is about a different car, the 2007 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
MONITOR STRATEGY

Related DTCs P0171: Fuel trim Lean (Bank 1)
P0172: Fuel trim Rich (Bank 1)
P0174: Fuel trim Lean (Bank 2)
P0175: Fuel trim Rich (Bank 2)
Required Sensors / Components (Main) Fuel system
Required Sensors / Components (Related) A/F sensor, Mass air flow meter, Crankshaft position sensor
Frequency of Operation Continuous
Duration Less than 10 seconds
MIL Operation 2 driving cycles
Sequence of Operation None
scientia non olet · About LEMON Manuals