B2242 on the 2018 Subaru Outback
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| 15-225-18R | 2019-10-31. Service bulletin. This Service Information bulletin provides a procedure to use when diagnosing the infotainment system, a DTC B2242- “UART COMMUNICATION” is stored in memory. UART communication occurs between the infotainment head unit (H/U) and the Auto HVAC system control panel. |
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1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.