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, perform troubleshooting for those DTCs according to the following priorities.
a. DTCs other than fuel trim malfunction (DTCs P0171 and P0172) and misfire (DTCs P0300 to P0304).
b. Fuel trim malfunction (DTCs P0171 and P0172).
c. Misfire (DTCs P0300 to P0304).