International SA 33 SPN 1841 FMI 6: BO Stop Overcurrent

Code details

Manufacturer

International (Navistar)

Applies to

International / Navistar body controller (ESC) and multiplexed modules

Fault code

SA 33 SPN 1841 FMI 6

J1939 SPN

1841

FMI

6 — Current above normal or grounded circuit

Reporting module

Body Controller (source address 33)

Component / signal

Black Out Brake/Stop Lamp Select

Truck models in source

3200, 4100, 4300, 4400, 7300, 7400, 7500, 7600, 7700, 8500, 8600, BE 200, CE Bus, CXT, DuraStar, LoneStar, MXT, ProStar, RXT, TranStar, WorkStar

Connector pins

1603-J

Logical signal

BO_Stop_Cmd

Cause and when it sets

Cause: Current above normal or grounded circuit

What to do next

• Read active and inactive codes with the OEM service tool (Diamond Logic Builder can clear previously active codes) and note the occurrence count.
• FMI 6 tells the shop the type of failure to test for: current above normal or grounded circuit.
• Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.