P0491 on the 2015 Audi Q7
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.
| A011511 2039899- | 2017-10-21. Service bulletin. The MIL is on due to DTCs P0491 and P0492 being stored in the ECM. |
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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.