Safe to driveTo the nearest safe stop
J1939 code SPN 3461. Below — how the fault is worded at the factory by International, and what the second half of the code (FMI) means in the standard.
| FMI 5 | Engagement Status - Transmission input shaft PTO 2 — PTO Air Solenoid Under Current Or Open Circuit |
| FMI 6 | Engagement Status - Transmission input shaft PTO 2 — PTO Air Solenoid Overcurrent |
| SPN 3461 FMI 53461/5 · 3461.5 | current below normal or open circuit |
| SPN 3461 FMI 63461/6 · 3461.6 | current above normal or grounded circuit |
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.