LINE AS 4202371 - Caterpillar

The Module Identifier (MID) is a diagnostic code that indicates the electronic control module that diagnosed the fault.
Table 2
Module Identifiers (MID)    
Code Number     Module    
30     Caterpillar Monitoring System    
81     Transmission ECM    
82     Implement ECM    The Failure Mode Identifier (FMI) is a diagnostic code that indicates the type of failure that has occurred.
Table 3
Failure Mode Identifier (FMI)    
Code Number     Description    
0     Data is valid but the operational range is above normal.    
1     Data is valid but the operational range is below normal.    
2     Data is erratic, intermittent, or incorrect.    
3     Voltage is above normal or there is a high short in the circuit.    
4     Voltage is below normal or there is a low short in the circuit.    
5     Current is below normal or there is an open circuit.    
6     Current is above normal or there is a grounded circuit.    
7     The mechanical system is not responding properly.    
8     The frequency, the pulse width, or the period is abnormal.    
9     The update is abnormal.    
10     The rate of change is abnormal.    
11     Failure mode cannot be identified.    
12     A device or a component is malfunctioning.    
13     A device or a component requires calibration.    Reference: Refer to Service Manual, SENR1394, "Caterpillar Monitoring System" for service information.