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
Refer to DTC P0031 / P0032: HO2S (Bank 1 Sensor-1) Heater Control Circuit Low / High:H27 Engine.

P0037, P0038
Refer to DTC P0037 / P0038: HO2S (Bank 1 Sensor-2) Heater Control Circuit Low / High:H27 Engine.

P0051, P0052
Refer to DTC P0051 / P0052: HO2S (Bank 2 Sensor-1) Heater Control Circuit Low / High:H27 Engine.

P0057, P0058
Refer to DTC P0057 / P0058: HO2S (Bank 2 Sensor-2) Heater Control Circuit Low / High:H27 Engine.

Operation:

Enable Conditions:

Typical Malfunction Thresholds:

Primary HO2S Heater Monitor

Operation:

Enable Conditions:

Typical Malfunction Thresholds:

Secondary HO2S Heater Monitor

Mode $06 Data:

MODE $06 Data