Check the exhaust system for an exhaust leak near the engine.

Was an exhaust leak found ?

	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
	▶ Go to next step as below.

Visually/physically inspect the following items :

- Vacuum hoses for splits, kinks and improper connections.

- Exhaust system between HO2S and Three way catalyst for air leakage.

- EVAP system for leakage.

- PCV hose for proper installation.

Was a problem found in any of the above are as ?

	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
	▶ Go to next step as below.

Visually/physically inspect the following items :

- Check for corrosion on terminals.

- Check for terminal tension( at the HO2S and at the PCM).

- Check for damaged wiring.

- Check the HO2S ground circuit for a good connection.

- Check front and rear HO2S for connections being reversed.

Was a problem found in any of the above are as ?

	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
	▶ Go to next step as below.