P0929: owner reports and bulletins

Powertrain (generic, all makes). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P0929 on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

6 complaints filed with NHTSA mention P0929, 6 of them since 2015, across 4 different models. The component owners most often filed it under: power train.

Manufacturer service bulletins that name P0929

12 technical service bulletins and manufacturer communications filed with NHTSA mention P0929, from 1 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • FORD EXPLORER (2025), bulletin 11010772: Some 2025 Explorer vehicles, excluding Police Interceptor Utility, built on or before 04-Nov-2024 may exhibit a powertrain malfunction (wrench) indicator with diagnostic trouble code (DTC) P0929:77 stored in the gear shi…
  • FORD ESCAPE (2022), bulletin 10214843: Some 2022 Escape and Bronco Sport vehicles may exhibit a powertrain malfunction (wrench) indicator with diagnostic trouble code (DTC) P0929:77 stored in the gear shift module (GSM). This may be due to the software in the…
  • FORD MAVERICK (2022, 2021), bulletin 10219068: Some 2021-2022 Mustang Mach-E, 2022 Escape/Bronco Sport/Maverick/Transit vehicles may exhibit a powertrain malfunction (wrench) indicator with diagnostic trouble code (DTC) P0929:77 stored in the gear shift module (GSM).…
  • FORD MUSTANG MACH E (2021, 2022), bulletin 11009434: Some 2021-2022 Mustang Mach-E vehicles built on or before 17-Jan-2022 and 2022 Transit vehicles built on or before 17-May-2022 may exhibit a powertrain malfunction (wrench) indicator with diagnostic trouble code (DTC) P0…

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.