Heated Oxygen Sensor (HO2S) Monitor
This monitor applies to DTCs P0132, P0133, P0134, P0135, P0137, P0138, P0139, P0141, P0152, P0153, P0154, P0155, P0157, P0158, P0159 and P0161. Following conditions must be met during the test:
- Engine coolant temperature must be 176°F (80°C) or more.
- Atmospheric temperature is 14°F (-10°C) or more.
- Selector lever is in "D" range.
Monitor takes about 5 minutes to complete. To run monitor, use illustration. See Fig 1. Perform steps as follows:
- Remove all test equipment from vehicle and install all components and connectors that were removed or disconnected during testing.
- After engine is completely warmed up, turn off ignition.
- Start engine and quickly accelerate to 35-40 MPH.
- While keeping accelerator pedal opening degree constant, keep speed at 35-40 MPH for 2 minutes or more.
- Return vehicle to shop and turn ignition off.