P0456 on the 2023 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.
| TSB_2078916_3 | 2026-07-07. Service bulletin. This bulletin provides information when the fuel tank cap seal is leaking; DTC P044200, P045600 and/ or P00EF00 in stored in the ECM. |
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| TSB_2078916_2 | 2025-11-08. Service bulletin. This bulletin provides information when the fuel tank cap seal is leaking; DTC P044200, P045600 and/ or P00EF00 in stored in the ECM. |
| TSB_2078916_1 | 2025-09-04. Service bulletin. This TSB provides information when the fuel tank cap seal is leaking, DTC P044200, P045600, and/or P00EF00 stored in ECM. |
| 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. |
| A2022512065287_5 | 2022-11-04. Service bulletin. If DTC P044200 or P045600 are present, the GX36 may need to be replaced. |
5 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.