Do not driveTo the nearest safe stop
J1939 code SPN 1590. Below — how the fault is worded at the factory by Mercedes-Benz and SITRAK, and what the second half of the code (FMI) means in the standard.
| FMI 9 | Adaptive Cruise Control Message Not Received |
| FMI 19 | Adaptive Cruise Control – General Error |
| FMI 0 | ACC status error on the CAN bus. Scan tool code: P1116. Effect: Loss of communication with the modules, some functions are disabled. |
| FMI 19 | Incorrect data length of the ACC1 CAN frame. Effect: Torque may be limited. |
| SPN 1590 FMI 01590/0 · 1590.0 | data above normal range (most severe level) |
| SPN 1590 FMI 91590/9 · 1590.9 | abnormal update rate |
| SPN 1590 FMI 191590/19 · 1590.19 | error in received network data |
Do not drive. Stop as soon as it’s safe to do so — don’t keep going.
The code is flagged critical: the manufacturer considers it unsafe to keep driving without checking.
This code alone cannot say what will fail next, so stop at the first safe opportunity and look at it on the spot.
That said, the manufacturer flags this code as critical — if in doubt, it is safer to stop and check on the spot.
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.