Porsche Cayenne 2017–2020 — technical service bulletin
Bulletin 122-D4S6F-04 · NHTSA communication 10173003 · issued Mar 3, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2020
model years
6
vehicle entries
Official summary
Instructions for clearing check engine fault Memory Entries Relating to Oxygen Sensor
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.