Safe to driveUntil the next service
SPN 520858 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 13 | Switch 6-Pack #1 Location 1 — Unexpected switch in switchpack 1 (MID 15) position 1 from left (Switch 1 of 6) |
| SPN 520858 FMI 13520858/13 · 520858.13 | calibration out of range |
Safe to drive. Below — how much time you have and what happens if you keep going.
A standalone fault with no immediate consequences for driving.
Show the codes at the next service. If a second code from the same system appears, stop putting it off.
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.