International SA 58 SPN 520812 FMI 9: J1939 Body Builder Data link error

Code details

Manufacturer

International (Navistar)

Applies to

International / Navistar body controller (ESC) and multiplexed modules

Fault code

SA 58 SPN 520812 FMI 9

J1939 SPN

520812

FMI

9 — Abnormal update rate

Reporting module

Rear HVAC (source address 58)

Component / signal

No-Idle datalink error

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

Cause and when it sets

Cause: Abnormal update rate

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 9 tells the shop the type of failure to test for: abnormal update rate.
• Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.