PACCAR (Kenworth & Peterbilt)
PACCAR fault code
SPN 1668 / FMI 19
PACCAR Fault Code U142F: CAN Communication – Message (ACM_to_Eng) Out of Range, Estimated Pre-DOC Pressure From Aftertreatment System
U142F on PACCAR (Kenworth & Peterbilt) engines means: CAN Communication – Message (ACM_to_Eng) Out of Range, Estimated Pre-DOC Pressure 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
- U142F
- J1939 SPN
- 1668
- 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 P30B3 — CAN – Message (AT1IG1) Time-Out From NOx Sensor Before Catalyst
- PACCAR Fault Code U0105 — CAN – Message (TESTRUN_INFO) Time-Out From Aftertreatment System
- PACCAR Fault Code U1015 — CAN Communication – Hardware or Software Malfunction on A-CAN
- PACCAR Fault Code U1016 — CAN – Message (A1DOC) Time-Out From Aftertreatment System
- PACCAR Fault Code U1112 — CAN – Message (SCR1) Time-Out From Aftertreatment System
- PACCAR Fault Code U1114 — CAN – Message (AT1T1I) Time-Out, DEF Tank Information From Aftertreatment System
- PACCAR Fault Code U111D — CAN – Message (EXH_GAS_CORR) Time-Out From Aftertreatment System
- PACCAR Fault Code U1134 — CAN – Message (A1SCRDSR2) Time-Out From Aftertreatment System
Source: PACCAR MX-13 2017–2020 fault code list (Diesel Laptops). See also OBD-II codes.