Magnum MMG25FHICAN6 troubleshooting: 9 fault codes and symptom-cause-remedy entries from the manufacturer's own service documentation.
Magnum MMG25FHICAN6 — full specs, parts & maintenance.
| Code | Meaning |
|---|---|
| Sd Gen L1 <V | Shutdown Generator Line 1 Voltage Irregularity |
| Sd Gen L2 <V | Shutdown Generator Line 2 Voltage Irregularity |
| Sd Gen L3 <V | Shutdown Generator Line 3 Voltage Irregularity |
| Symptom | Cause | Remedy |
|---|---|---|
| LOW FUEL LEVEL SHUTDOWN | Fuel level is low, fuel tank has leaks, or fuel level sender and wiring are damaged. | Check the fuel level, check for leaks, inspect the fuel level sender and wiring. |
| LOW OIL PRESSURE SHUTDOWN | Oil level is low or engine has oil leaks. | Check the oil level, visually inspect the engine for leaks, check the oil pressure sender. |
| LOW COOLANT LEVEL SHUTDOWN | Coolant level is low or coolant has mixed with oil. | Check the coolant level, inspect hoses and engine for leaks, check the engine oil. |
| HIGH COOLANT TEMPERATURE SHUTDOWN | Coolant temperature is too high. | Check the coolant level, add coolant if necessary, inspect hoses and engine for leaks, check serpentine drive belt tension. |
| OVERCRANK SHUTDOWN | Engine will not start. | Check fuel level, check fuel pump operation, clean air filter. |
| OVERSPEED OR UNDERSPEED SHUTDOWN | Engine speed is above or below 60.0 Hz. | Disconnect all loads and check engine speed with no load, adjust throttle as needed. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Documented causes: Fuel level is low, fuel tank has leaks, or fuel level sender and wiring are damaged.. See the table for the matching fixes.
Documented causes: Oil level is low or engine has oil leaks.. See the table for the matching fixes.
Documented causes: Coolant level is low or coolant has mixed with oil.. See the table for the matching fixes.