U0452: 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 U0452 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

5 complaints filed with NHTSA mention U0452, 5 of them since 2015, across 5 different models. The component owners most often filed it under: seat belts.

Manufacturer service bulletins that name U0452

17 technical service bulletins and manufacturer communications filed with NHTSA mention U0452, from 5 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • FORD FUSION (2017, 2018), bulletin 10127406: Some 2017-2018 Fusion/MKZ vehicles built on or before 27-Oct-2017 may exhibit an illuminated airbag lamp and/or SYNC 911 assist not operational message being displayed. Connect the IDS and check the RCM and APIM for DTCs…
  • LINCOLN MKZ (2017, 2018), bulletin 10127406: Some 2017-2018 Fusion/MKZ vehicles built on or before 27-Oct-2017 may exhibit an illuminated airbag lamp and/or SYNC 911 assist not operational message being displayed. Connect the IDS and check the RCM and APIM for DTCs…
  • CADILLAC ESCALADE (2015, 2016, 2017), bulletin 10113356: This Preliminary Information communication provides information to the technician about vehicles that have a reduced or loss of power steering assist, steering wheel jerks or kicks back when turning, Service Stabilitrak …
  • CHEVROLET SILVERADO (2015, 2016, 2017, 2014), bulletin 10113356: This Preliminary Information communication provides information to the technician about vehicles that have a reduced or loss of power steering assist, steering wheel jerks or kicks back when turning, Service Stabilitrak …
  • GMC SIERRA (2015, 2016, 2017, 2014), bulletin 10113356: This Preliminary Information communication provides information to the technician about vehicles that have a reduced or loss of power steering assist, steering wheel jerks or kicks back when turning, Service Stabilitrak …
  • FORD F-150 (2015, 2016, 2017), bulletin 10127407: Some 2015-2017 F-150 vehicles may exhibit intermittent and/or inoperative A/C, radio, and/or power window switch control with multiple illuminated warning indicators and/or diagnostic trouble codes (DTCs) U0140, U0155, U…

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.