Safe to driveUntil the next service
J1939 code SPN 1384. 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 8 | CAN messages are not acknowledged — short between the bus lines or an open circuit. Repair: Check the CAN bus links to all systems and check the wiring (SL3/3, SL3/4, SL3/6, SL3/7). The resistance between the two wires must be 60 ohms. Make sure the systems connected to the CAN data bus work correctly. Check the CAN bus links to all systems and check the wiring (SL3/3, SL3/4, SL3/6, SL3/7). |
| FMI 9 | The engine unit does not respond on the CAN bus. Repair: Run the diagnostic check of this system, check the CAN bus connections (SL3/3, SL3/4). The resistance between the two wires must be 60 ohms. |
| SPN 1384 FMI 81384/8 · 1384.8 | abnormal frequency or pulse width |
| SPN 1384 FMI 91384/9 · 1384.9 | abnormal update rate |
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.