B156C on the 2017 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.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| TJ33285-3-0-2018 | 2019-04-22. Service bulletin. This is a Technical Journal: DTC IHU-B156C8F sets incorrectly. For the cars in the header this DTC can be ignored as it doesn't affect any of the functions in the car. Do not perform any fault tracing or component replacement due to this DTC if there is no related customer symptom. |
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| TJ33285-3-0-2018 | 2019-04-08. Service bulletin. This is a Technical Journal: DTC IHU-B156C8F sets incorrectly. For the cars in the header this DTC can be ignored as it doesn't affect any of the functions in the car. Do not perform any fault tracing or component replacement due to this DTC if there is no related customer symptom. |
2 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.