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2009 Porsche Cayenne GTS

"I'm getting P1081 and P1094 codes. What should I check?"

P1081 & P1094 - MAF Sensor Circuit Issues

Both codes relate to your Mass Air Flow sensors (Bank 1 and Bank 2). While it's possible both MAF sensors failed, it's more likely there's a common cause affecting both.

Check first (most likely):

  • • Vacuum leaks in intake system - check all hoses and connections
  • • Air filter housing and intake boot integrity
  • • Crankcase ventilation system for blockages

If no leaks found:

  • • Clean MAF sensors with MAF cleaner
  • • Check wiring harness to both sensors

Start here: Inspect for vacuum leaks around the intake manifold and throttle body area.

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