( TL19E20A20300000000HAAT13 )

Fails emission test (MIL works OK, no DTCs set)

Diagnostic procedure

1. Except KE, KG, KR models: Inspect the three way catalytic converter (TWC).
2. Except KE, KG, KR models: Check the spark plugs.
3. Test the fuel pressure.
4. Except KE, KG, KR models: Test the injectors.
5. Check the EVAP system.
6. Troubleshoot the VTEC system oil pressure.

Also check for

- Fuel contamination
- Low compression
- Broken cam chain