PACCAR (Kenworth & Peterbilt)
PACCAR fault code
SPN 4765 / FMI 19
PACCAR Fault Code U1013: CAN Communication – Message (A1DOC) Out of Range, DOC Intake Gas Temperature From Aftertreatment System
U1013 on PACCAR (Kenworth & Peterbilt) engines means: CAN Communication – Message (A1DOC) Out of Range, DOC Intake Gas Temperature From Aftertreatment System. 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
- U1013
- J1939 SPN
- 4765
- 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
- PACCAR Fault Code P3750 — Exhaust Gas Temperature Before DOC – Voltage Too High or Short Circuit to Supply
- PACCAR Fault Code P3751 — Exhaust Gas Temperature Before DOC – Voltage Too Low or Short Circuit to Ground
- PACCAR Fault Code P3752 — Exhaust Gas Temperature Before DOC – Unlikely, Not Changing During Operation
- PACCAR Fault Code P3781 — Exhaust Gas Temperature Before DOC – Data Valid But Too High, Moderately Severe
- International Fault Code SPN 4765 FMI 2 — DOCIT Signal – Erratic, Intermittent, or Incorrect
- International Fault Code SPN 4765 FMI 20 — DOCIT Signal – Drifted HIGH
- International Fault Code SPN 4765 FMI 21 — DOCIT Signal – Drifted LOW
- International Fault Code SPN 4765 FMI 3 — DOCIT Signal – Out of Range HIGH
Source: PACCAR MX-13 2017–2020 fault code list (Diesel Laptops). See also OBD-II codes.