P129F Diagnostic Trouble Code Discussion for September 2023
fuel pump driver control module fuel pump speed signal
Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.Trouble Ticket Help Requests for DTC P129F
| Help Request | Posted | |
| 2020 Chevrolet Silverado 6500 HD 6.6L No Start, Stall VIN: 1HTKJPVMXL P129F: fuel pump driver control module fuel pump speed signal. desired fuel pressure is 60 but with truck running is about 20 psi and sometimes drops to 0 and truck dies. i can command fp on with gds2 and runs up to 80 psi but when i start truck it drops to 0 and truck dies. i load tested wires from driver to pump wit... |
September 14, 2023 |
