| FMI | Description |
| 0 | Too high, or too large |
| 1 | Too low |
| 2 | Intermittent or incorrect data |
| 3 | High Voltage |
| 4 | Low Voltage |
| 5 | Low current, or open circuit |
| 6 | High current, or short circuit |
| 7 | Mechanical error |
| 8 | Abnormal Frequency |
| 9 | Communication error |
| 10 | Abnormally wide variations |
| 11 | Other error |
| 12 | Defective unit or component |
| 13 | Incorrect calibration |
| 14 | Special instruction |
| 15 | Reserved for future use |
| 16 | Incorrect signal to function |
| 17 | Function cannot perform it task |
| 18 | Fuction gives an unreasonable resl |
| CODE | Description |
| ER11 | VECU |
| ER12 | EMS |
| ER13 | J1939 Fast Link |
| ER14 | J1587 Slow Link |
| ER21 | VECU input voltage high |
| ER31 | Power Shift Valve |
| ER41 | Flow Control Valve |
| ER42 | Boost Temperature Sensor PlD105 |
| ER43 | Engine Speed Sensor, Crank SlD22 |
| ER44 | Boost Pressure Sensor PlD 102 |
| MID | PID PPID SID PSID | Description |
| Vahicle trol Unit | 231 | SAE J1939 data link |
| 240 | Programme memory | |
| 250 | SAE J1708/J1587 data link | |
| 251 | Power supply | |
| 253 | Calibration memory EEPROM | |
| 254 | Controller 1 | |
| 96 | Fuel level sensor | |
| 128: Engine ECU | 1 | Injector #1; |
| 100 | Engine oil pressure; | |
| 102 | Boost pressure; | |
| 105/106 | Intake manifold temperature; | |
| 107 | Air filter pressure drop; | |
| 108 | Ambient air pressure sensor; | |
| 110 | Engine coolant temperature; | |
| 111 | Coolant level; | |
| 153 | Crankcase pressure; | |
| 158 | ECU battery potential; | |
| 172 | Air inlet temperature; | |
| 175 | Engine oil temperature; | |
| 2 | Injector #2; | |
| 21 | Engine position sensor, Camshaft; | |
| 22 | Engine speed sensor, Flywheel; | |
| 231 | SAE J1939 data link; | |
| 240 | Programme memory; | |
| 250 | SAE J1708/J1587 data link: | |
| 253 | Calibration memory EEPROM; | |
| 254 | Controller 1; | |
| 3 | Injector #3 | |
| 4 | Injector #4 | |
| 45 | Inlet air heater status; | |
| 5 | Injector #5; | |
| 6 | Injector #6; | |
| 70 | Air inlet heater driver #1; | |
| 94 | Fuel feed pressure; | |
| 97 | Water in fuel indicator; | |
| 98 | Engine oil level; | |
| 140: Instrument.Centre module | 231 | SAE J1939 data link; |
| 240 | Programme memory; | |
| 250 | SAE J1708/J1587 data link; | |
| 253 | Calibration memory EEPROM; | |
| 254 | Controller 1; | |
| 187: VehicleControl Unit | 1114 | Oil cooler solenoid valve; |
| 1121 | Boost solenoid; | |
| 1122 | Conflux cutoff solenoid; | |
| 1133 | Engine speed control switch; | |
| 1156 | Hydraulic oil temp; | |
| 1190 | Power shift PPV current: | |
| 1191 | Flow control PPV current; |