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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.

1/1 Heated Oxygen Sensor (HO2S) catalyst monitor is monitored when engine is running, coolant temperature is more than 158°F (70°C), open throttle, vehicle speed steadily increases to more than 18 MPH but less than 55 MPH, and light engine load exists for at least 5 minutes. DTC will set in Powertrain Control Module (PCM) memory when PCM senses 1/1 HO2S is switching from less than .39 volt to more than .6 volt fewer times than required. Possible causes for DTC to set are: intermittent condition, exhaust leak, defective 1/1 HO2S, or defective connector or wiring.

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