Service bulletins for the 2021 Audi TTS
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
575 on file from NHTSA, as of 2026-10-19.
About P0442 on the 2021 Audi TTS: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: P0442 are shown. Show all
| A2023522065287_6 | 2023-02-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). 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. EQUIPMENT:ELECTRICAL. If DTC P044200 or P045600 are present, the GX36 may need to be replaced. |
| A2022492065287_4 | 2022-10-05. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:CANISTER. This bulletin advises to replace the EVAP LD Pump if DTC P044200 or DTC P045600 are present under specific circumstances. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.