Service bulletins for the 2021 Audi A4
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.
1057 on file from NHTSA, as of 2026-10-19.
About P17F9 on the 2021 Audi A4: 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: P17F9 are shown. Show all
| A3524542064312_7 | 2025-01-07. Service bulletin. POWER TRAIN. This bulletin provides information when the Gearbox warning is on, DTC P17F900 is stored in the TCM. |
|---|---|
| A3524532064312_6 | 2024-11-06. Service bulletin. POWER TRAIN. This bulletin provides information when the Gearbox warning is on, DTC P17F900 is stored in the TCM. |
| A3523472064312_5 | 2024-01-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); UNKNOWN OR OTHER. This bulletin provides information when the Gearbox warning is on, DTC P17F900 is stored in the TCM. |
| A3523452064312_4 | 2023-10-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This bulletin provides information for when a Gearbox warning is on and DTC P17F900 is stored in the TCM. |
| A3521392064312_1 | 2021-11-05. Service bulletin. POWER TRAIN. This bulletin contains three different repair scenarios for when DTC P17F900 is stored in the TCM with symptom code 22345 and there is a gearbox malfunction message. |
| A3421532064848_1 | 2021-11-05. Service bulletin. POWER TRAIN. This bulletin addresses an issue where basic settings cannot be performed as DTC P17F900 is stored in the TCM. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.