Porsche Cayenne 2004–2006 — technical service bulletin
Bulletin ATI-0903 · NHTSA communication 10033037 · issued Sep 28, 2009
Technical service bulletin
communication type
Service Brakes, Air
component
2004–2006
model years
11
vehicle entries
Official summary
Porsche: brake booster distance sensor. Vehicle has the warning phc unavailable. The vehicle has fault code 1673 for the brake booster distance sensor. The sensors replaced have been found not to have an internal failure. Disconnect the electrical connector and clean the contacts. *pe
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.