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SPN 4047 — Transfer Case Output Shaft PTO Actuator

Safe to driveTo the nearest safe stop

J1939 code SPN 4047. Below — how the fault is worded at the factory by International, Knorr-Bremse EBS, MAN and Renault Trucks, and what the second half of the code (FMI) means in the standard.

InternationalKnorr-Bremse EBSMANRenault Trucks

International

FMI 5Transfer Case Output Shaft PTO Actuator — Transfer Case Output Shaft PTO Actuator Under Current Or Open Circuit
FMI 6Transfer Case Output Shaft PTO Actuator — Transfer Case Output Shaft PTO Actuator Over Current

Knorr-Bremse EBS

FMI 3Central control unit, EEPROM unknown value bridge config. Not identified

MAN

FMI 3Central control unit EEPROM bridge configuration - Not identified

Renault Trucks

FMI 10The “+” main switch message is missing. Repair: Check the main switch, check the wiring between the unit and the component (54, 55) (fuse F28 10 A), check the control unit.

What FMI means in J1939

SPN 4047 FMI 34047/3 · 4047.3voltage above normal or shorted high
SPN 4047 FMI 54047/5 · 4047.5current below normal or open circuit
SPN 4047 FMI 64047/6 · 4047.6current above normal or grounded circuit
SPN 4047 FMI 104047/10 · 4047.10abnormal rate of change

Can I keep driving

Safe to drive. Below — how much time you have and what happens if you keep going.

What happens if you keep driving

Time you have: To the nearest safe stop

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.

Nearby: transmission

Scanner threw several codes at once? Paste the whole list — we will show which one is the root cause and which ones simply followed.