Safe to driveTo the nearest safe stop
J1939 code SPN 4044. Below — how the fault is worded at the factory by Ford Trucks, International, Knorr-Bremse EBS and MAN, and what the second half of the code (FMI) means in the standard.
Ford TrucksInternationalKnorr-Bremse EBSMAN
Ford Trucks/Ecotorq writes fault numbers in its own format: the code in the table below is a Ford code (hexadecimal, zero-padded), not a J1939 SPN. It matches the standard only where the signal itself is standard, and usually matches the title of this page by digit alone.
| FMI 11 | Brake pressure sensor 1 short circuit. FODP code (scan tool): C0044. |
| FMI 13 | Brake pressure sensor 1 open circuit. FODP code (scan tool): C0044. |
| FMI 5 | Transfer Case High Range Actuator — Transfer Case High Range Solenoid Under Current Or Open Circuit |
| FMI 6 | Transfer Case High Range Actuator — Transfer Case High Range Solenoid Short To Ground |
| FMI 8 | Central control unit, EEPROM checksum error site ID. Wrong signal |
| FMI 8 | Central control unit EEPROM site identification - Wrong signal |
Safe to drive. Below — how much time you have and what happens if you keep going.
The gearbox or clutch has gone into limp mode: some gears may be unavailable and an automated box may stop shifting under load.
The main risk is being left on a climb with no gear and rolling back. Do not take a loaded truck into the hills; reaching level ground and a shop is fine.
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.