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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 P22AB-11: A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Short to Ground; DTC P22AB-12: A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Short to Battery; DTC P22AB-13: A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Open; DTC P22AB-16: A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Voltage Below Threshold; DTC P22AB-17: A/F (O2) Sensor Positive Current Control Bank 1 Sensor 2 Circuit Voltage Above Threshold; DTC P22B2-11: A/F (O2) Sensor Negative Current Control Bank 1 Sensor 2 Circuit Short to Ground; DTC P22B2-12: A/F (O2) Sensor Negative Current Control Bank 1 Sensor 2 Circuit Short to Battery [11/2023 - ] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different variant/trim than selected.
P22AB: AIR FUEL RATIO SENSOR (SENSOR 2) CIRCUIT OPEN

Air fuel ratio sensor (sensor 2) impedance Higher than 510 Ω
P22AC: AIR FUEL RATIO SENSOR (SENSOR 2) RANGE CHECK (A1B+ LOW VOLTAGE)

A1B+ terminal voltage 1.43 V or less
P22AC: AIR FUEL RATIO SENSOR (SENSOR 2) SENSOR CORRELATION (A1B+ AND A1B-)

Difference between A1B+ and A1B- terminal voltage 0.2 V or less
P22AD: AIR FUEL RATIO SENSOR (SENSOR 2) RANGE CHECK (A1B+ HIGH VOLTAGE)

A1B+ terminal voltage Higher than 6.135 V
P22AD: AIR FUEL RATIO SENSOR (SENSOR 2) SENSOR CORRELATION (A1B+ AND A1B-)

Difference between A1B+ and A1B- terminal voltage Higher than 1.72 V
P22B3: AIR FUEL RATIO SENSOR (SENSOR 2) RANGE CHECK (A1B- LOW VOLTAGE)

A1B- terminal voltage 1.07 V or less
P22B4: AIR FUEL RATIO SENSOR (SENSOR 2) RANGE CHECK (A1B- HIGH VOLTAGE)

A1B- terminal voltage Higher than 4.59 V
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