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Home >> Lexus >> 2014 >> IS 350C Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Engine Control System (Diagnostic Codes (P0010-P0171))) >> 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) [08/2013 - ] >> Monitor Strategy
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Monitor Strategy

WARNING: This page is about a different car, the 2015 Lexus IS 250C and 2014 Lexus IS 250C. However, it is still accessible from the selected car via links, so may be relevant.
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) Air fuel ratio sensor, Mass air flow meter, Crankshaft position sensor
Frequency of Operation Continuous
Duration Within 10 seconds
MIL Operation 2 driving cycles
Sequence of Operation None
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