Do not driveMinutes
J1939 code SPN 124. Below — how the fault is worded at the factory by Renault Trucks and ZF AS-Tronic, and what the second half of the code (FMI) means in the standard.
| FMI 0 | Clutch travel signal fault. Repair: Run the diagnostic check of the clutch actuator. Check the wiring between the Astronic and the components (X1B/10, X1B/15, X1B/20). Switch the ignition off, switch it on again and repeat the test. If the fault persists, replace the control unit. |
ZF AS-Tronic uses its own fault numbering: the number in the table below is an internal ZF code, not a J1939 SPN. It matches the title of this page by digit only and means something different.
| FMI 0 | No "clutch travel" signal. |
| SPN 124 FMI 0124/0 · 124.0 | data above normal range (most severe level) |
Do not drive. Stop as soon as it’s safe to do so — don’t keep going.
The oil film in the bearings is already breaking down. Every minute under load is metal on metal on the crank journals.
Next comes spun bearings and a full engine rebuild. Shut it down now and coast to the shoulder without revving.
Shut the engine down. Check the oil level with the dipstick and look underneath for leaks. Don’t restart until pressure is back.
Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.