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Service bulletin ATI21601

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10198516
Published by NHTSA2021-06-28
Manufacturer's numberATI21601
Manufacturer's date2016-02-10
NHTSA componentENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

NHTSA's summary

Red Hybrid Warning in the Instrument Cluster and Temperature Faults in High Voltage Power Electronics POAEE00, POAF300, P0BD200 stored in High Voltage Power Electronics. The coolant hose with the above part number has a built in thermostat which can sometimes stick, causing high temperature faults in the e-Machine.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine

Trouble codes named

P0BD2

Vehicles listed
PORSCHE CAYENNE2015, 2016, 2017, 2018, 2019, 2020, 2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
23V8410002023-12-13. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:CABLE/CORD:ONBOARD
21V3410002021-05-12. ENGINE
19V7350002019-10-16. SERVICE BRAKES; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
19V1150002019-02-20. SERVICE BRAKES; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
WTK42026-10-02. Service campaign. Porsche intranet posting with Campaign WTK4 information
No. WTK42026-10-02. Service campaign. Technical Information for Campaign WTK4 – Reset Vehicle Electrical System Battery
No. 103-25-22026-10-02. Service bulletin. Technical Information for Need to Replace Components of the High-Voltage Battery - High-Voltage Battery Control Unit / Cell module; No Mixed Installation Permitted: Observe Specified Approach
No. 31-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils
No. 30-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils
No. 29-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils
No. 28-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils. Note that this bulletin covers all models back to model year 1984, for which C40 engine oils are allocated.
No. 27-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils. Note that the bulletin covers all models back to model year 1984, for which C20 engine oils are allocated.
No. 26-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils. Note that the bulletin includes all models back to model year 1984, for which C30 engine oils are allocated.
No. 25-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche A40 Engine Oils. Note that this bulletin covers all vehicles from model year 1997 to 2020, for which A40 engine oils are assigned. Model years 1997-2001 are not available for selection in the system.