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Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different car >> Section 258 (Engine Control System (2ZR-FAE) - Diagnostic Codes (3 Of 8)) >> SFI System >> DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1) [01/2019 - 03/2019] >> Monitor Strategy

Monitor Strategy

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Related DTCs P0171: Fuel trim lean
P0172: Fuel trim rich
Required Sensors/Components (Main) Fuel system
Required Sensors/Components (Related) Air fuel ratio sensor
Mass air flow meter sub-assembly
Crank position sensor
Frequency of Operation Continuous
Duration Within 10 seconds
MIL Operation 2 driving cycles
Sequence of Operation None
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