Safe to driveDrivable, but watch it yourself
J1939 code SPN 1330. Below — how the fault is worded at the factory by KAMAZ, MAZ and YaMZ, and what the second half of the code (FMI) means in the standard.
| FMI 3 | Misfire in cylinder 8 |
| FMI 3 | Misfire detected in cylinder 8 - Misfire. Blink code: 5-3-4. Repair: Check the injector connections and the injector harness. |
| FMI 3 | Fault detected, misfire in cylinder 8 (Misfire). Blink code: 5-3-4. Repair: Check the injector connections and the injector harness. |
| SPN 1330 FMI 31330/3 · 1330.3 | voltage above normal or shorted high |
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.