P129F is a manufacturer-specific code, so its exact meaning depends on the make.
Depends on what it means on your make. Get it read before a long drive.
Have a shop read it with the maker's own scan tool first.
Owners named P129F in 67 complaints to the U.S. government, most often on the Chevrolet Equinox.
Models that report it most
Complaints that name P129F, by model. Raw counts, not a failure rate: popular models get more complaints. Tap a model for its years, mileage and what owners say fixed it.
P129F by model: P129F Chevrolet Equinox (12) · P129F GMC Sierra (12) · P129F Chevrolet Silverado (11) · P129F GMC Terrain (10)
Years owners report it on most: 2022 Chevrolet Equinox · 2022 GMC Terrain · 2021 Chevrolet Tahoe · 2022 Chevrolet Silverado · 2023 GMC Sierra · 2020 GMC Sierra
The details
What P129F means
P129F is a manufacturer-specific code: each carmaker decides what it means, so the same code can point to different problems on different brands. We haven't verified its meaning yet. A dealer or a scanner with the maker's software can tell you exactly what it means on your car.
Owners who reported it drive: Chevrolet (34), Gmc (30), Volkswagen (1), Buick (1).
What owners describe
- Stalls or shuts off: 63% of complaints
- Loses power or goes into limp mode: 24% of complaints
- Won't start or hard to start: 22% of complaints
- Warning lights and electrical faults: 10% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report P129F most
2022 Chevrolet Equinox (9), 2022 GMC Terrain (9), 2021 Chevrolet Tahoe (6), 2022 Chevrolet Silverado (5), 2023 GMC Sierra (4), 2020 GMC Sierra (3).
Related codes
Counts: NHTSA owner complaints whose text names P129F. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.







