DTC P0141: 1/2 O2 Sensor Heater Failure: Description
WARNING: This page is about a different car, the 2000 Dodge Intrepid, 2000 Chrysler LHS, 2000 Chrysler Intrepid, 2000 Chrysler Concorde, and 2000 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
1/2 Heated Oxygen Sensor (HO2S) heater circuit is monitored with engine at idle immediately after a cold start, with engine coolant temperature less than 147°F (63.9°C) and ambient/battery temperature is within plus or minus 27°F (2.8°C) of engine coolant temperature. DTC will set in Powertrain Control Module (PCM) memory when PCM senses 1/2 Heated Oxygen Sensor (HO2S) voltage is more than 3 volts for 30-90 seconds. Possible causes for DTC to set are: defective 1/2 HO2S, defective connectors or defective wiring.