HO2S Heater Monitor

OBD System Description - HO2S Heater Monitor

System Description / Monitoring Procedure
For both primary and secondary HO2S heaters, the system monitors proper current and loaded voltage. The HO2S heaters are monitored once per driving cycle during monitoring conditions.

DTC Description / Detecting Condition / Confirmation Procedure

P0031, P0032, P0053
Refer to DTC P0031 / P0032 / P0053: HO2S (Bank 1 Sensor-1) Heater Control Circuit Low / High / Heater Resistance. P0031 P0032 P0053

P0037, P0038, P0054
Refer to DTC P0037 / P0038 / P0054: HO2S (Bank 1 Sensor-2) Heater Control Circuit Low / High / Heater Resistance. P0037 P0038 P0054

P0051, P0052, P0059
Refer to DTC P0051 / P0052 / P0059: HO2S (Bank 2 Sensor-1) Heater Control Circuit Low / High / Heater Resistance. P0051 P0052 P0059

P0057, P0058, P0060
Refer to DTC P0057 / P0058 / P0060: HO2S (Bank 2 Sensor-2) Heater Control Circuit Low / High / Heater Resistance. P0057 P0058 P0060










Primary HO2S Heater Monitor










Secondary HO2S Heater Monitor




MODE $06 Data