Detection Condition

DTC is set when PCM monitors input voltage from front Heated Oxygen Sensor (HO2S). If input voltage from front HO2Snever exceeds 0.55 volt for 54.2 seconds, PCM determines that sensor circuit is not activated when following conditions are met:

Monitoring Conditions

• Drive mode 3.
• Engine speed is more than 1500 RPM.
• ECT is more than 158°F (70°C).

This is a Continuous Monitor (CM). MIL illuminates if PCM detects malfunction condition in 2 consecutive drive cycles. Pending code is available if PCM detects malfunction condition during first drive cycle. Freeze Frame Data is available and DTC is stored in PCM memory.