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Home >> Toyota >> 2014 >> Highlander XLE, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 39 (SFI System [1AR-FE] - Diagnostic Codes - (Except Hybrid) (6 Of 8)) >> SFI System >> DTC P0171: System Too Lean (Bank 1); DTC P0172: System Too Rich (Bank 1) [12/2013 - 11/2016] >> Monitor Strategy

Monitor Strategy

WARNING: This page is about a different variant/trim than selected.
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
Crankshaft position sensor
Frequency of Operation Continuous
Duration Within 10 seconds
MIL Operation 2 driving cycles
Sequence of Operation None
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