P06B4 on the 2027 Volvo XC90
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.
Nobody has written a description of this code yet.
| 37929.2.0 | 2026-10-05. Service bulletin. This is a TJ - text only no attachments - If a customer experiences a DIM message stating "Propulsion System Service Required" and DTC IGM P06B400 is set, please follow the advice under "Service". Verify that the vehicle has software version 5.1.21 or newer. If necessary, update the vehicle's software according to TJ 31543. If the vehicle already has software version 5.1.21 or newer, or if the DTC comes back after the software update, replace the IGM. |
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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.