P0456 on the 2019 Audi TT
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.
| A2023522065287_6 | 2023-02-07. Service bulletin. This bulletin provides instructions for when the MIL is on and DTC P044200 and/or P045600 is stored in the ECM. |
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| A2022512065287_5 | 2022-11-04. Service bulletin. If DTC P044200 or P045600 are present, the GX36 may need to be replaced. |
| A2022492065287_4 | 2022-10-05. Service bulletin. This bulletin advises to replace the EVAP LD Pump if DTC P044200 or DTC P045600 are present under specific circumstances. |
3 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.