DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 55 (Engine Control System (A25A-FXS) - Diagnostic Codes (P2270-P2610)) >> SFI System >> DTC P2270-19: A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 2 Circuit Current Above Threshold; DTC P2271-18: A/F (O2) Sensor Signal Biased/Stuck Rich Bank 1 Sensor 2 Circuit Current Below Threshold [10/2022 - 11/2023] >> Typical Enabling Conditions

Typical Enabling Conditions

WARNING: This page is about a different variant/trim than selected.
Auxiliary battery voltage 11 V or higher
Engine coolant temperature 75°C (167°F) or higher
Atmospheric pressure 76 kPa (abs) [11 psi (abs)] or higher
Time after engine start 2 seconds or more
Air fuel ratio sensor (sensor 2) malfunction (P22AB, P22AC, P22AD, P22B3, P22B4) Not detected