C2100: owner reports and bulletins

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

Got C2100 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 C2100, 2 of them since 2015, across 2 different models. The component owners most often filed it under: air bags.

Manufacturer service bulletins that name C2100

4 technical service bulletins and manufacturer communications filed with NHTSA mention C2100, from 1 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • JEEP WRANGLER (2021), bulletin 10212494: 12V Battery Low Charge This bulletin involves testing and possibly replacing the 12V battery. Technicians or customers may experience a Malfunction Indicator Lamp MIL illumination. Upon further investigation the technici…

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.