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 ).