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Service bulletins for the 2021 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.

829 on file from NHTSA, as of 2026-10-19.

About P26B1 on the 2021 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: P26B1 are shown. Show all

Bulletins, newest first
No. 196-222025-08-06. Service bulletin. ENGINE. Technical information for Check Engine Warning Light Active / Fault Memory Entry "P26B100/00CB24" in the Thermal Management Control Unit (TME): Re-Programming Control Unit
No. 2221.42024-07-02. Service bulletin. ENGINE. Instructions on advanced technical information for the Cayenne E-Hybrid - thermal management fault (P26B100) causes a check engine light
No. 2221.32023-12-08. Service bulletin. ELECTRICAL SYSTEM. Instructions on advanced technical information for the Cayenne E-Hybrid - thermal management fault (P26B100)
No. 2221.22023-05-03. Service bulletin. ENGINE AND ENGINE COOLING. Instructions on advanced tehcnical information for the Cayenne E-Hybrid - thermal management fault (P26B100) causes a check engine light
No. 2221.12023-04-06. Service bulletin. ENGINE AND ENGINE COOLING. Advanced technical information for the Cayenne E-Hybrid - thermal management fault P26B100 Causes Check Engine Light
No. 193-222023-03-04. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Technical information - Check Engine Warning Light Active / Fault Memory Entry "P26B100/00CB24" in the Thermal Management Control Unit (TME):
No. 193-222022-10-05. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Technical information for check engine warning light active/fault memory entry (P26B100/00CB24) in the TME
No. 22212022-09-07. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Instructions on advanced technical information for the Cayenne E-Hybrid thermal management fault. Fault P26B100

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.