Safe to driveUntil the next service
SPN 4025 is a manufacturer number outside the standard J1939 table: different makes can put different things under it. Below — how it is worded by Renault Trucks, and what the second half of the code (FMI) means.
| FMI 9 | CAN bus fault, short circuit. Repair: Check the CAN bus communication, the resistance between the two wires (22, 49) is 60 ohms, check the control unit. |
| SPN 4025 FMI 94025/9 · 4025.9 | abnormal update rate |
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.