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Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Engine Control System (3UR-FBE) - Diagnostic Codes (2 Of 6)) >> 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) [08/2015 - 08/2018] >> Monitor Strategy

Monitor Strategy

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Related DTCs P0171: Fuel trim lean (for Bank 1)
P0172: Fuel trim rich (for Bank 1)
P0174: Fuel trim lean (for Bank 2)
P0175: Fuel trim rich (for 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 Within 10 seconds
MIL Operation 2 driving cycles
Sequence of Operation None
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