Retrieving DTCS: Notes
NOTE:
It will be necessary to use MIL and scan tool to retrieve all DTCs. When using MIL to retrieve DTCs, some DTCs have more than one meaning. The MIL is unable to distinguish between different failures for a specified component. For example, there are several possible failures for the downstream oxygen sensor system, but the MIL can only identify a downstream oxygen sensor failure by flashing a DTC 21, but the scan tool will be able to distinguish between the different failures. When using scan tool, scan tool is not able to identify all possible DTCs. As an example, scan tool may not be able to identify or display a DTC for a malfunctioning A/C clutch relay circuit, Auto Shutdown (ASD) relay circuit, or charging system voltage circuit, but these DTCs will be displayed by the MIL.