Safe to driveUntil the next service
J1939 code SPN 1050. Below — how the fault is worded at the factory by Renault Trucks, and what the second half of the code (FMI) means in the standard.
| FMI 2 | Rear circuit pneumatic fault or module internal fault. Repair: Check the module inlet and outlet for air leaks. Check the air lines for contamination and kinks. Check the exhaust at the valve and at the module with a PC. Check the minimum pressure switches. |
| FMI 7 | Rear circuit pneumatic fault or module internal fault. Repair: Check the module inlet and outlet for air leaks. Check the air lines for contamination and kinks. Check the exhaust at the valve and at the module with a PC. Check the minimum pressure switches. |
| FMI 9 | Communication fault between the rear module and the EBS unit (internal CAN bus). Repair: Check the continuity of the 4 wires between the EBS unit and the module (rear axle module) (X4/4, X4/7, X4/10, X4/13). Check the supply of the EBS unit (positive on X1/7, X1/8 and negative on X1/10, X1/12) and of the module (X4/4 and X4/13). Check the fuses that belong to the EBS. |
| FMI 12 | Rear module, internal fault. Repair: Clear the fault codes. If the fault persists, replace the module. |
| FMI 13 | Incompatibility between the rear module and the EBS unit. Repair: Check the part numbers of the module and the EBS unit. |
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.