PACCAR (Kenworth & Peterbilt)
PACCAR fault code
SPN 639 / FMI 9
PACCAR Fault Code U0143: CAN – Message (EEC2) Time-Out From Vehicle Control System
U0143 on PACCAR (Kenworth & Peterbilt) engines means: CAN – Message (EEC2) Time-Out From Vehicle Control System. The failure mode (FMI 9) is “abnormal update rate”.
Code details
- Manufacturer
- PACCAR (Kenworth & Peterbilt)
- Applies to
- PACCAR MX-13 (2017–2020)
- Fault code
- U0143
- J1939 SPN
- 639
- FMI
- 9 — Abnormal update rate
- 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 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.
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 U0143 — CAN – Message (EEC2) Time-Out
- PACCAR Fault Code P0865 — CAN – Message (PROPB_AST) Time-Out From Transmission System
- PACCAR Fault Code P1053 — Speed Functions Off Switch – Data Erratic, Intermittent, or Incorrect
- PACCAR Fault Code P1054 — Downhill Speed Control Switches – Data Erratic, Intermittent or Incorrect
- PACCAR Fault Code P1863 — CAN Communication – Message (PROPB_AST) Out of Range, Maneuvering Mode From Transmission System
- PACCAR Fault Code U0011 — CAN Communication – Hardware or Software Malfunction on V-CAN2
- PACCAR Fault Code U0104 — CAN – Message (CCVS) Time-Out From Vehicle Control System
- PACCAR Fault Code U0106 — CAN – Message (CCVS_EBS) Time-Out From Brake System
Source: PACCAR MX-13 2017–2020 fault code list (Diesel Laptops). See also OBD-II codes.