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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FKS) - Diagnostic Codes (1 Of 6) >> SFI System >> DTC P0030-12: HO2S Heater Control Bank 1 Sensor 1 Circuit Short to Battery; DTC P0030-13: HO2S Heater Control Bank 1 Sensor 1 Circuit Open; DTC P0050-12: HO2S Heater Control Bank 2 Sensor 1 Circuit Short to Battery; DTC P0050-13: HO2S Heater Control Bank 2 Sensor 1 Circuit Open; DTC P101A-9E: A/F Sensor Heater Performance Bank 1 Sensor 1 Stuck On; DTC P103A-9E: A/F Sensor Heater Performance Bank 2 Sensor 1 Stuck On [12/2019 - 10/2022] >> Monitor Strategy

Monitor Strategy

Related DTCs P0031: Air fuel ratio sensor (bank 1 sensor 1) heater range check (low current)
P0032: Air fuel ratio sensor (bank 1 sensor 1) heater range check (high current)
P0051: Air fuel ratio sensor (bank 2 sensor 1) heater range check (low current)
P0052: Air fuel ratio sensor (bank 2 sensor 1) heater range check (high current)
P101D: Air fuel ratio sensor (bank 1 sensor 1) heater performance
P103D: Air fuel ratio sensor (bank 2 sensor 1) heater performance
Required Sensors/Components (Main) Air fuel ratio sensor heater
Required Sensors/Components (Related) -
Frequency of Operation Continuous
Duration 10 seconds: P0031 and P0051
10.24 seconds: P0032 and P0052
1 second: P101D and P103D
MIL Operation Immediate
Sequence of Operation None