PACCAR (Kenworth & Peterbilt)
PACCAR fault code
SPN 649 / FMI 4
PACCAR Fault Code P1024: BPV Actuator Power Supply – Incorrect
P1024 on PACCAR (Kenworth & Peterbilt) engines means: BPV Actuator Power Supply – Incorrect. The failure mode (FMI 4) is “voltage below normal, or shorted to low source”.
Code details
- Manufacturer
- PACCAR (Kenworth & Peterbilt)
- Applies to
- PACCAR MX-13 (2017–2020)
- Fault code
- P1024
- J1939 SPN
- 649
- FMI
- 4 — Voltage below normal, or shorted to low source
- 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 4 tells the shop the type of failure to test for: voltage below normal, or shorted to low source.
- 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 P101E — BPV Actuator Position – Unable to Reach Target
- PACCAR Fault Code P101F — BPV Actuator Current – Data Valid But Too High
- PACCAR Fault Code P1020 — BPV Actuator – Internal Error
- PACCAR Fault Code P1021 — BPV Actuator – CAN Communication Error
- PACCAR Fault Code P1022 — BPV Actuator – Internal Error
- PACCAR Fault Code P1722 — BPV Control – Data Erratic, Intermittent, or Incorrect
Source: PACCAR MX-13 2017–2020 fault code list (Diesel Laptops). See also OBD-II codes.