DTC Priorities for Troubleshooting

Priorities for troubleshooting:

If troubleshooting priorities for multiple DTCs are given in the applicable DTC chart, these priorities should be followed.

If no instructions are given, troubleshooting for those the DTCs according to the priorities.
1. DTCs other than fuel trim malfunction (DTC P0171, P0172) and misfire (DTC P0300 - P0304).
2. Fuel trim malfunction (DTC P0171, P0172).
3. Misfire (DTC P0300 - P0304).