B0090: owner reports and bulletins

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

Got B0090 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

2 complaints filed with NHTSA mention B0090, 1 of them since 2015, across 2 different models. The component owners most often filed it under: air bags.

Manufacturer service bulletins that name B0090

2 technical service bulletins and manufacturer communications filed with NHTSA mention B0090, from 2 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • RAM 1500 (2019, 2020, 2021, 2022), bulletin 11001206: After A Recent Service Repair The Vehicle is Setting Diagnostic Trouble Codes (DTCs) B0090-49 Left Frontal Acceleration Sensor-Internal Electronic Failure, B0095- 49 Right Frontal Acceleration Sensor-Internal Electronic …
  • ACURA ILX (2017), bulletin 10139559: Service bulletin - The SRS indicator is on with DTC B0090-87 (no signal from the left front impact sensor). A wire diameter variance lets water enter the SRS front impact sensor connector and causes damage to the harness…

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.