Using the SSTs (WDS or Equivalent)
HEATED OXYGEN SENSOR INSPECTIONUsing the SSTs (WDS or equivalent)
1. Connect the SSTs (WDS or equivalent) to the DLC.
2. Access "O2S11" "O2S21" "O2S12" and "O2S22" PIDs. The WDS or equivalent measures and shows the voltage.
3. If not as specified, inspect the following.
- Intake-air system
- Fuel system
- On-board diagnostic system
4. If these systems are okay, replace the heated oxygen sensor.