DTC P0133: 1/1 O2 Sensor Slow Response: Description

To run monitor, warm engine until coolant temperature is more than 147°F (64°C). Drive vehicle at a speed of more than 10 MPH with throttle remaining open for 2 minutes. Stop vehicle, and let engine idle with transmission in Drive. DTC will set when 1/1 HO2S voltage switches from less than .35 volt to more than .53 volt and back fewer times than required. Possible causes are: exhaust leak, high resistance in signal circuit, high resistance in sensor ground circuit, Automatic Shutdown (ASD) relay circuit open, heater control circuit open or defective 1/1 HO2S.