Safe to driveDrivable, but watch it yourself
SPN 520672 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by International, and what the second half of the code (FMI) means.
| FMI 5 | Bus Stop Arm Command — Bus Stop Arm Output is Under Current Or Open Circuit |
| FMI 6 | Bus Stop Arm Command — Bus Stop Arm Output is over current |
| SPN 520672 FMI 5520672/5 · 520672.5 | current below normal or open circuit |
| SPN 520672 FMI 6520672/6 · 520672.6 | current above normal or grounded circuit |
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.