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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 P0036-12: HO2S Heater Control Circuit Bank 1 Sensor 2 Circuit Short to Battery; DTC P0036-14: HO2S Heater Control Circuit Bank 1 Sensor 2 Circuit Short to Ground or Open; DTC P0056-12: HO2S Heater Control Bank 2 Sensor 2 Circuit Short to Battery; DTC P0056-14: HO2S Heater Control Bank 2 Sensor 2 Circuit Short to Ground or Open; DTC P0141-18: O2 Sensor Heater Circuit Bank 1 Sensor 2 Circuit Current Below Threshold; DTC P0161-18: O2 Sensor Heater Circuit Bank 2 Sensor 2 Circuit Current Below Threshold; DTC P102A-9E: O2 Sensor Heater Performance Bank 1 Sensor 2 Stuck On; DTC P105A-9E: O2 Sensor Heater Performance Bank 2 Sensor 2 Stuck On [12/2019 - 10/2022] >> Monitor Strategy

Monitor Strategy

Related DTCs P0037: Heated oxygen sensor (bank 1 sensor 2) heater range check (low current)
P0038: Heated oxygen sensor (bank 1 sensor 2) heater range check (high current)
P0057: Heated oxygen sensor (bank 2 sensor 2) heater range check (low current)
P0058: Heated oxygen sensor (bank 2 sensor 2) heater range check (high current)
P0141: Heated oxygen sensor (bank 1 sensor 2) heater performance
P0161: Heated oxygen sensor (bank 2 sensor 2) heater performance
P102D: Heated oxygen sensor (bank 1 sensor 2) heater performance
P105D: Heated oxygen sensor (bank 2 sensor 2) heater performance
Required Sensors/Components (Main) Heated oxygen sensor (sensor 2) heater
Required Sensors/Components (Related) -
Frequency of Operation Continuous: P0037, P0038, P0056, P0058, P102D, P105D
Once per driving cycle: P0141, P0161
Duration 0.5 seconds: P0037, P0057, P102D, P105D
2.064 seconds: P0038, P0058
10 seconds: P0141, P0161
MIL Operation Immediate: P0037, P0038, P0056, P0058, P102D, P105D
2 driving cycles: P0141, P0161
Sequence of Operation None
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