DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (2GR-FKS) - Diagnostic Codes (2 Of 6) >> SFI System >> DTC P0171-00: System Too Lean Bank 1; DTC P0172-00: System Too Rich Bank 1; DTC P0174-00: System Too Lean Bank 2; DTC P0175-00: System Too Rich Bank 2; DTC P1170-00: Fuel Performance/Port Injector; DTC P117B-00: Fuel Performance/Direct Injector [12/2019 - 10/2022] >> Monitor Strategy

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)
P1170: Fuel trim (port injection fail)
P117B: Fuel trim (direct injection fail)
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: P0171, P0172, P0174, P0175
Immediate: P1170, P117B
Sequence of Operation None
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