P1744: owner reports and bulletins
Got P1744 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
19 complaints filed with NHTSA mention P1744, 12 of them since 2015, across 10 different models. The component owners most often filed it under: power train.
Most-reported models
| Vehicle | Complaints | Model years reported |
|---|---|---|
| FORD ESCAPE | 7 | 2002, 2007, 2014, 2016, 2017 |
| MAZDA 626 | 3 | 1997, 1999, 2001 |
Manufacturer service bulletins that name P1744
9 technical service bulletins and manufacturer communications filed with NHTSA mention P1744, from 3 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:
- LINCOLN MKX (2020), bulletin 10183392: Some 2020 Edge/Nautilus/Escape/Corsair/Transit Connect vehicles with and 8F35/8F40 transmission built on or before 30-Sep-2020 may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble …
- FORD TRANSIT CONNECT (2020), bulletin 10183392: Some 2020 Edge/Nautilus/Escape/Corsair/Transit Connect vehicles with and 8F35/8F40 transmission built on or before 30-Sep-2020 may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble …
- FORD EXPEDITION (2018, 2017), bulletin 10174402: Some 2017-2018 F-150/Raptor, 2018 Expedition/Mustang/Navigator vehicles equipped with a 10R80 automatic transmission and built on or before 20-Nov-2017 may exhibit an illuminated malfunction indicator lamp (MIL) with dia…
- LINCOLN NAVIGATOR (2018), bulletin 10174402: Some 2017-2018 F-150/Raptor, 2018 Expedition/Mustang/Navigator vehicles equipped with a 10R80 automatic transmission and built on or before 20-Nov-2017 may exhibit an illuminated malfunction indicator lamp (MIL) with dia…
- FORD MUSTANG (2018, 2017), bulletin 10143076: Some 2017-2018 F-150/Raptor, 2018 Expedition/Mustang/Navigator vehicles equipped with a 10R80 automatic transmission and built on or before 20-Nov-2017 may exhibit an illuminated malfunction indicator lamp (MIL) with dia…
- KIA OPTIMA HYBRID (2011, 2012, 2013, 2014), bulletin 10123331: TSB - HCU/TCU LOGIC IMPROVEMENT FOR DTC P1744 (400 MESH EQUIPPED TRANSMISSIONS ONLY) - This bulletin provides the procedure to improve the logic of the Hybrid Control Unit (HCU) on some 2011-2012MY Optima Hybrid (TF HEV)…
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.