by Richard Provencio | Oct 21, 2026 | Porsche Repair
Code P0491 tells you the secondary air system on bank 1 moved less air than the engine computer expected during a cold start. On a Porsche Cayenne in Highlands, the electric air pump is the first part to test, though a sticking valve or a cracked vacuum line can set...
by Richard Provencio | May 30, 2025 | Porsche Repair
At Highlands Automotive, our experienced and certified technicians specialize in European automobile brands like Porsche. We will use the latest diagnostic tools to ensure your Porsche isn’t having potential problems. The diagnostic service of a Porsche is done...
