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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 53 (Engine Control System (A25A-FXS) - Diagnostic Codes (P2100-P2195)) >> SFI System >> DTC P2195-19: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Circuit Current Above Threshold; DTC P2195-24: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Signal Stuck High; DTC P2196-18: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Circuit Current Below Threshold; DTC P2196-23: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1 Signal Stuck Low [10/2022 - 11/2023] >> Monitor Strategy

Monitor Strategy

WARNING: This page is about a different variant/trim than selected.
Related DTCs P2195: Air fuel ratio sensor (sensor 1) signal stuck lean
P2196: Air fuel ratio sensor (sensor 1) signal stuck rich
Required Sensors/Components (Main) Air fuel ratio sensor (sensor 1)
Required Sensors/Components (Related) Air fuel ratio sensor (sensor 2)
Frequency of Operation Continuous: Sensor low/high current
Once per driving cycle: Sensor limit current
Duration 3 seconds: Sensor limit current
5 seconds: Sensor low/high current
MIL Operation 2 driving cycles
Sequence of Operation None
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