Safe to driveDrivable, but watch it yourself
SPN 520198 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by KAMAZ, MAZ, SITRAK, Volvo and YaMZ, and what the second half of the code (FMI) means.
| FMI 2 | Coolant temperature: no rise within specified time |
| FMI 2 | Fault flagged by the coolant temperature sensor plausibility check (absolute/dynamic) - Temperature not changing. Blink code: 2-4-5. Repair: Check the coolant temperature sensor and its wiring. |
| FMI 4 | Knock sensor 3 open circuit |
| FMI 11 | Vehicle performance limitation is active. Scan tool code: P1007. Effect: Torque may be limited. |
| FMI 5 | LCM output current to the lamps is below 0.1 A. Open supply wire between the LCM and the lamps, open wire between the lamps and the ground point, or lamp failure. |
| FMI 6 | LCM output current to the lamps is above 3.5 A. Wire shorted to ground between the LCM and the lamps. |
| FMI 2 | Fault detected by coolant temperature sensor absolute/dynamic plausibility check (Temperature not changing). Blink code: 2-4-5. Repair: Check the coolant temperature sensor and its wiring. |
Safe to drive. Below — how much time you have and what happens if you keep going.
This is an electrical fault: an open, a short or a bad contact in the sensor circuit. The value it measures is most likely fine.
You can drive. But until the circuit is repaired this system runs blind and cannot warn you about a real failure.
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.