Safe to driveEnough to reach the yard
J1939 code SPN 2011. Below — how the fault is worded at the factory by International and Mercedes-Benz, and what the second half of the code (FMI) means in the standard.
| FMI 9 | Source Address 11 — Loss of data link from ABS controller; Source Address 11 — ABS Data Link Comm. Failure |
| FMI 9 | J1939 Message is missing from source address 3 (3dec = Transmission #1 ECU missing) |
| SPN 2011 FMI 92011/9 · 2011.9 | abnormal update rate |
Safe to drive. Below — how much time you have and what happens if you keep going.
The modules have stopped hearing each other on the bus. Some dash readings are now made up and some functions are simply off.
You can physically drive, but do not trust the instruments, and the other codes in the list may well be false: fix the bus first, then look at the rest.
Check connectors and the harness: a broken CAN twisted pair takes out communication for every ECU at once.
This code is often not the fault itself but a knock-on. If any of these is in the same readout, start with it:
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.