Visual Inspection

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the plug hole plate. (See Plug Hole Plate Removal/Installation .)
Disconnect the exhaust gas pressure sensor connector.
Remove the exhaust gas pressure sensor. (See Exhaust Gas Pressure Sensor Removal/Installation .)
Visually inspect the exhaust gas pressure sensor for the following malfunction:
- Damage, cracks, dirt
  - If there is any malfunction, repair or replace the exhaust gas pressure sensor. (See Exhaust Gas Pressure Sensor Removal/Installation .)