Service bulletins for the 2026 Porsche Cayenne
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.
253 on file from NHTSA, as of 2026-10-19.
About P2421 on the 2026 Porsche Cayenne: 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: P2421 are shown. Show all
| No. 2521.1 | 2025-10-08. Service bulletin. FUEL/PROPULSION SYSTEM. Instructions on advanced technical information for the Cayenne. DME P242100 – Fuel Tank Isolation Valve for Tank Ventilation System Stuck Open |
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| No. 2521 | 2025-09-09. Service bulletin. ENGINE. Instructions on advanced technical information for the Cayenne DME P242100 – Fuel Tank Isolation Valve for Tank Ventilation System Stuck Open. Models affected are 9YAAV1, 9YABN1, 9YACT1, 9YBAV1, 9YBBN1, 9YBCT1 |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.