Monitored & Set Conditions
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Dodge Grand Caravan, 2002 Dodge Caravan, 2002 Chrysler Voyager, 2002 Chrysler Town & Country, and 2001 Dodge Grand Caravan. However, it is still accessible from the selected car via links, so may be relevant.
1/2 Heated Oxygen Sensor (HO2S) operation is monitored when engine is running for more than 2 minutes and engine coolant temperature is more than 151°F (67°C). DTC will be stored in Powertrain Control Module (PCM) memory if 1/2 HO2S signal voltage is .35-.58 volt for 30 seconds and then 1.5 volts for 1.5 minutes. Possible causes for DTC to set are: intermittent condition, defective 1/2 HO2S, defective PCM, or defective connectors or wiring.