HO2S Heater Monitor
OBD System Description - HO2S Heater MonitorSystem Description / Monitoring Procedure
For both primary and secondary HO2S heaters, the system monitors proper current and loaded voltage.
DTC Description / Detecting Condition / Confirmation Procedure
P0031, P0032
Refer to DTC P0031 / P0032: HO2S Heater Control Circuit Low / High (Sensor-1, Bank-1). P0031 P0032
P0037, P0038
Refer to DTC P0037 / P0038: HO2S Heater Control Circuit Low / High (Sensor-2, Bank-1). P0037 P0038
P0051, P0052
Refer to DTC P0051 / P0052: HO2S Heater Control Circuit Low / High (Sensor-1, Bank-2). P0051 P0052
P0057, P0058
Refer to DTC P0057 / P0058: HO2S Heater Control Circuit Low / High (Sensor-2, Bank-2). P0057 P0058
Operation:
Enable Conditions:
Typical Malfunction Thresholds:
Primary A/F Sensor Heater Monitor
Operation:
Enable Conditions:
Typical Malfunction Thresholds:
Secondary HO2S Heater Monitor
MODE $06 Data:
MODE $06 Data