| DETECTION CONDITION |
- The PCM monitors the rich (0.55 V
) to lean (0.3 V
) response time of the HO2S. The PCM measures the response time when the following conditions are met. The PCM determines a HO2S response deterioration malfunction when the measured response time is more than 120 ms for 2 of 3 times
.
MONITORING CONDITIONS
- EGR System, A/F sensor heater, HO2S heater, A/F sensor, HO2S and TWC Repair Verification Drive Mode
- Following conditions are met:
- During deceleration fuel cut
- Estimated temperature of the zirconia element inside the HO2S: above 450 °C {842 °F}
- The PCM monitors for a time-out malfunction (when HO2S remains above 0.2 V
for longer than a specified period of time during fuel cut control). The PCM measures the amount of time from when the following conditions are met until the HO2S output voltage drops below 0.2 V
. The PCM determines a HO2S time-out malfunction when the detected time is more than 4 s for 2 of 3 times
.
MONITORING CONDITIONS
- EGR System, A/F sensor heater, HO2S heater, A/F sensor, HO2S and TWC Repair Verification Drive Mode
- Following conditions are met:
- During deceleration fuel cut
- Estimated temperature of the zirconia element inside the HO2S: above 450 °C {842 °F}
Diagnostic support note
- This is an intermittent monitor (A/F sensor, HO2S).
- The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
- PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
- FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
- The DTC is stored in the PCM memory.
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