Safe to driveDrivable, but watch it yourself
SPN 523350 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 and YaMZ, and what the second half of the code (FMI) means.
| FMI 3 | Bank 1 injectors: fault, engine stop |
| FMI 4 | Bank 1 injectors: fault, engine stop |
| FMI 11 | Bank 1 injectors: fault, engine stop |
| FMI 3 | Injector group 1 driver circuit fault - Short circuit. Blink code: 1-5-1. Power will be reduced. Repair: Check the injector connectors and harness. |
| FMI 4 | Injector group 1 driver circuit fault - Negative wire shorted to ground. Blink code: 1-5-1. Power will be reduced. Repair: Check the injector connectors and harness. |
| FMI 11 | Injector group 1 driver circuit fault - Depends on calibration. Blink code: 1-5-1. Power will be reduced. Repair: Check the injector connectors and harness. |
| FMI 3 | Injector group 1 driver circuit fault (Short circuit). Blink code: 1-5-1. Power will be reduced. Repair: Check the injector connectors and harness. |
| FMI 4 | Injector group 1 driver circuit fault (Negative wire shorted to ground). Blink code: 1-5-1. Power will be reduced. Repair: Check the injector connectors and harness. |
| FMI 11 | Injector group 1 driver circuit fault (Calibration dependent). Blink code: 1-5-1. Power will be reduced. Repair: Check the injector connectors and harness. |
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.