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Home >> Toyota >> 2014 >> Sienna Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0101-P0390)) >> 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

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 Less than 10 seconds
MIL Operation 2 driving cycles
Sequence of Operation None