B273C: owner reports and bulletins
Got B273C 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
17 complaints filed with NHTSA mention B273C, 17 of them since 2015, across 2 different models. The component owners most often filed it under: electrical system.
Most-reported models
| Vehicle | Complaints | Model years reported |
|---|---|---|
| JEEP GRAND CHEROKEE | 16 | 2022, 2023, 2024 |
Manufacturer service bulletins that name B273C
8 technical service bulletins and manufacturer communications filed with NHTSA mention B273C, from 1 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:
- JEEP WRANGLER 4XE (2024), bulletin 11002032: Service Hybrid Electric Vehicle System Warning Message And Light Are Displayed. B273C-00 - Digital Crash Input Set In HCP
- JEEP WRANGLER (2024), bulletin 11008974: Service Hybrid Electric Vehicle System Warning Message And Light Are Displayed. B273C-00 - Digital Crash Input Set In HCP
- JEEP WAGONEER (2024), bulletin 11010255: "Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the f…
- JEEP GRAND CHEROKEE 4XE (2024), bulletin 11010478: "Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the f…
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.