International SA 33 SPN 1716 FMI 2: Transmission Retarder Level Selection Switch Failure

SA 33 SPN 1716 FMI 2 on International / Navistar trucks means: Transmission Retarder Level Selection Switch Failure. The failure mode (FMI 2) is “data erratic, intermittent or incorrect”.

Code details

Manufacturer: International (Navistar)
Applies to: International / Navistar body controller (ESC) and multiplexed modules
Fault code: SA 33 SPN 1716 FMI 2
J1939 SPN: 1716
FMI: 2 — Data erratic, intermittent or incorrect
Reporting module: Body Controller (source address 33)
Component / signal: Retarder Selection, non-engine
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
Logical signal: Retarder_High_Switch

Cause and when it sets

Cause: Data erratic, intermittent or incorrect

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 2 tells the shop the type of failure to test for: data erratic, intermittent or incorrect.
Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.