Heated Oxygen Sensor Monitor
This monitor applies to DTCs P0132, P0133, P0137, P0139, P0152, P0153, P0158, and P0159. 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
NOTE:
Remove all test equipment from vehicle and install all components and connectors that were removed or disconnected during testing.
Monitor takes about 5 minutes to complete. To run monitor, use illustration. See Fig 1 . This monitor must be performed twice. Perform steps as follows:
- Start the engine and allow it to reach 176°F (80°C).
- Accelerate vehicle to 35-40 MPH.
- While keeping accelerator pedal position constant, keep vehicle speed at 35-40 MPH (4th gear on M/T) for 120 seconds or more (this is when monitor runs).
- Return vehicle to shop and turn ignition switch to LOCK position.
- Recheck for DTCs. If DTC P0132, P0133, P0137, P0139, P0152, P0153, P0158, or P0159 resets, return to appropriate diagnostic procedure under DIAGNOSTIC TESTS .