( TF09E8AA20300000000HAAT12 )
Misfire or rough running (MIL works OK, no DTCs set)

Diagnostic procedure
  1. Check the spark plugs.
  2. Test the fuel pressure.
  3. Test the injectors.
  4. Troubleshoot the fuel pump circuit.
  5. Troubleshoot the VTEC system oil pressure.
Also check for
  • Low compression
  • Valve clearance
  • Fuel contamination