U1010: owner reports and bulletins

Network / communication. We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got U1010 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

8 complaints filed with NHTSA mention U1010, 8 of them since 2015, across 3 different models. The component owners most often filed it under: electrical system.

Most-reported models

VehicleComplaintsModel years reported
FORD MAVERICK HYBRID52022, 2023

Manufacturer service bulletins that name U1010

4 technical service bulletins and manufacturer communications filed with NHTSA mention U1010, from 3 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • LINCOLN CORSAIR (2023), bulletin 10240726: Some 2023 Corsair vehicles equipped with a 2.5L plug-in hybrid electric vehicle (PHEV) engine may exhibit an illuminated powertrain malfunction indicator (wrench) lamp with DTC U1010 stored in the secondary on-board diag…
  • INFINITI EX35 (2008, 2009, 2010, 2011), bulletin 10192396: SERVICE INFORMATION Related to communication codes U1000, U1001, U1002, U1010: - Always diagnose the communication codes first. - When a module reports a U1000 code, it is typically operating normally; however, there is …
  • NISSAN 350Z (2005, 2006, 2007, 2008), bulletin 10192394: SERVICE INFORMATION Related to communication codes U1000, U1001, U1002, U1010: - Always diagnose the communication codes first. - When a module reports a U1000 code, it is typically operating normally; however, there is …

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.