UNDERSTANDING THE DIAGNOSTIC CODE BREAKDOWN CONTINUED
b. The EID identifies an abnormal operating condition.
3. Component Identifier (CID). A CID is a number with four digits which indicates which component generated
4. Failure Mode Identifier (FMI). An FMI is associated with either an engine or machine MID code and it
indicates the type of sensor failure. The FMI is the last two digits of the diagnostic code. Refer to Table 1 in this
work package for an explanation of FMI codes. FMI codes are defined by Society of Automotive Engineers
Figure 11. Messenger Display.
END OF TASK