U0422: 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 U0422 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

13 complaints filed with NHTSA mention U0422, 13 of them since 2015, across 8 different models. The component owners most often filed it under: electrical system.

Most-reported models

VehicleComplaintsModel years reported
CHEVROLET SILVERADO 150042014, 2016, 2018
CHEVROLET MALIBU32016, 2018, 2020

Manufacturer service bulletins that name U0422

73 technical service bulletins and manufacturer communications filed with NHTSA mention U0422, from 11 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • GMC YUKON XL (2025), bulletin 11011473: This Preliminary information communicates a false DTC U0422 set in theK5 Automatic Level Control Module and dealership should ignore and clear the DTC. This does not cause any customer complaints, warning messages or war…
  • CHEVROLET SUBURBAN 1500 (2025), bulletin 11011473: This Preliminary information communicates a false DTC U0422 set in theK5 Automatic Level Control Module and dealership should ignore and clear the DTC. This does not cause any customer complaints, warning messages or war…
  • LINCOLN NAUTILUS (2024), bulletin 10247164: Some 2024 Nautilus vehicles may set diagnostic trouble code (DTC) U0422:00 in the all-wheel drive (AWD) module when a diagnostic self-test is performed. This may be due to a communication error between the body control m…
  • JEEP WAGONEER (2022, 2023), bulletin 10227760: Power Side Step Module (PSSM) Update This bulletin involves reprogramming the PSSM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) and/or Service Air Suspension Message In …
  • CHRYSLER PACIFICA (2023), bulletin 10229766: U1190-00 And U0422-00 Are Set Erroneously After Remote Starting The Vehicle
  • JEEP GRAND WAGONEER (2023), bulletin 10248923: Transfer Case Shift Motor Wire Harness Connector Not Secured Customers may experience a Malfunction Indicator Lamp illumination. Upon further investigation the technician may find that one or more of the following Diagno…

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.