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.

DTC Description / Detecting Condition / Confirmation Procedure

P0135
Refer to DTC P0135: HO2S (Bank-1 Sensor-1) Heater Circuit Malfunction:H25 Engine.

P0141
Refer to DTC P0141: HO2S (Bank-1 Sensor-2) Heater Circuit Malfunction:H25 Engine.

P0155
Refer to DTC P0155: HO2S (Bank-2 Sensor-1) Heater Circuit Malfunction:H25 Engine.

P0161
Refer to DTC P0161: HO2S (Bank-2 Sensor-2) Heater Circuit Malfunction:H25 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