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: O2 Sensor Heater Circuit (Sensor-1).

P0141 Refer to DTC P0141: O2 Sensor Heater Circuit (Sensor-2).