Safe to driveDrivable, but watch it yourself
SPN 4016 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 Renault Trucks, and what the second half of the code (FMI) means.
| FMI 5 | High Current Auxiliary Power Relay 1 — High Current Load Under Current Or Open Circuit |
| FMI 6 | High Current Auxiliary Power Relay 1 — High Current Load Overcurrent |
| FMI 3 | Inconsistent lever position. Repair: Test the lever with a PC, check the lever, check the wiring between the unit and the component (15, 16, 17, 42, 43), check the control unit. |
| SPN 4016 FMI 34016/3 · 4016.3 | voltage above normal or shorted high |
| SPN 4016 FMI 54016/5 · 4016.5 | current below normal or open circuit |
| SPN 4016 FMI 64016/6 · 4016.6 | 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.