DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 54 (Engine Control System (A25A-FXS) - Diagnostic Codes (P2195-P2237)) >> SFI System >> DTC P2237-11: A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Ground; DTC P2237-12: A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Battery; DTC P2237-13: A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Open; DTC P2237-16: A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Below Threshold; DTC P2237-17: A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Above Threshold; DTC P2237-1B: A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Resistance Above Threshold; DTC P2251-11: O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Ground; DTC P2251-12: O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Battery [11/2023 - ] >> Monitor Strategy

Monitor Strategy

WARNING: This page is about a different variant/trim than selected.
Related DTCs P2237: Air fuel ratio sensor (sensor 1) circuit continuity check (circuit open)
P2238: Air fuel ratio sensor (sensor 1) impedance check (high impedance)
P2238: Air fuel ratio sensor (sensor 1) range check (A1A+ low voltage)
P2238: Air fuel ratio sensor (sensor 1) correlation (A1A+ and A1A-)
P2239: Air fuel ratio sensor (sensor 1) range check (A1A+ high voltage)
P2239: Air fuel ratio sensor (sensor 1) correlation (A1A+ and A1A-)
P2252: Air fuel ratio sensor (sensor 1) range check (A1A- low voltage)
P2253: Air fuel ratio sensor (sensor 1) range check (A1A- high voltage)
Required Sensors/Components (Main) Air fuel ratio sensor (sensor 1)
Required Sensors/Components (Related) Engine coolant temperature sensor
Crankshaft position sensor
Frequency of Operation Continuous
Duration 10 seconds: P2237, P2238 (air fuel ratio sensor (sensor 1) high impedance)
5 seconds: Others
MIL Operation 2 driving cycles
Sequence of Operation None