PACCAR (Kenworth & Peterbilt)
PACCAR fault code
SPN 65274 / FMI 19
PACCAR Fault Code U1790: CAN Communication – Message (BBM_to_Eng) Out of Range, ESC n3 From Body Builder Module
U1790 on PACCAR (Kenworth & Peterbilt) engines means: CAN Communication – Message (BBM_to_Eng) Out of Range, ESC n3 From Body Builder Module. The failure mode (FMI 19) is “received network data in error”.
Code details
- Manufacturer
- PACCAR (Kenworth & Peterbilt)
- Applies to
- PACCAR MX-13 (2017–2020)
- Fault code
- U1790
- J1939 SPN
- 65274
- FMI
- 19 — Received network data in error
- Truck models in source
- Kenworth T680, T880, W900, T800; Peterbilt 579, 389, 567, 367
What to do next
- Read active and inactive codes with the OEM service tool and note the occurrence count.
- FMI 19 tells the shop the type of failure to test for: received network data in error.
- Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.
Get this code diagnosed
Send one request and nearby diesel shops and mobile mechanics can quote the repair.
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Related fault codes
Source: PACCAR MX-13 2017–2020 fault code list (Diesel Laptops). See also OBD-II codes.