International SA 33 SPN 2609 FMI 16: HVAC High Pressure Protection

Code details

Manufacturer

International (Navistar)

Applies to

International / Navistar body controller (ESC) and multiplexed modules

Fault code

SA 33 SPN 2609 FMI 16

J1939 SPN

2609

FMI

16 — Data valid but above normal range (moderately severe)

Reporting module

Body Controller (source address 33)

Component / signal

Cab A/C Refrigerant Compressor Outlet Pressure

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: HVAC Head Pressure exceeded 480 psi. Compressor shut off until next key cycle for system protection

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 16 tells the shop the type of failure to test for: data valid but above normal range (moderately severe).
• Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.

Related fault codes

• International SA 33 SPN 2609 FMI 0 — HVAC Pressure Sensor reading above normal range
• International SA 33 SPN 2609 FMI 1 — HVAC Pressure Sensor reading below normal range
• International SA 33 SPN 2609 FMI 7 — AC - Service Now. Fan Problem/Clogged Pipe