Oxygen Sensor Heater Monitor

OBD System Description - Oxygen Sensor Heater Monitor

System Description / Monitoring Procedure
The ECM is monitored each HO2S heater proper current, loaded voltage and internal resistance when monitoring conditions are met. If detects malfunction, the ECM will set DTC.

DTC Description / Detecting Condition / Confirmation Procedure
P0030 / P0031 / P0032 / P0036 / P0037 / P0038 / P0050 / P0051 / P0052 /
P0056 / P0057 / P0058 P0030
Refer to DTC P0030 / P0031 / P0032 / P0036 / P0037 / P0038 / P0050 / P0051 / P0052 / P0056 / P0057 / P0058 P0135 / P0141 / P0155 / P0161
Refer to DTC P0135 / P0141 / P0155 / P0161 P0052

HO2S-1 Heater Circuit Monitor

Operation






Enable conditions






Typical malfunction thresholds






HO2S-2 Heater Circuit Monitor

Operation






Enable conditions









Typical malfunction thresholds






HO2S-1 Heater Monitor (Internal Resistance above Threshold)

Operation






Enable conditions






Typical malfunction thresholds






Mode $06 data






HO2S-2 Heater Circuit Monitor (Internal Resistance above Threshold)

Operation









Enable conditions






Typical malfunction thresholds






Mode $06 data