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cayenne s 3.0 hybrid fault code P055600 brake booster pressure sens

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  • 3 years later...
  • Admin

P055600 Brake booster pressure sensor vacuum


Fault setting condition(s)
- This detects a faulty electric brake booster vacuum pump
- This detects a brake booster vacuum that is too high, too low or implausible


Possible causes:
- Check brake pedal sensor adjustment
- Check whether vacuum is physically OK (leakage, etc.)
- Check wiring harness
- Check relay for vacuum pump
- Replace vacuum sensor
- Check DME control unit for correct program/data version
- Replace DME control unit

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  • 11 months later...
  • 4 months later...
  • 10 months later...

Hello Same problem on 2014 Panamera S Hybrid


Found this tech document on internet. 


Any one know what to check? I think is not a good solution to change the 3 complete vacuum lines. for only a leak o problem on one specific part. 


As the systems detects a vacuum problem it disable the electric mode and turn on the engine to ensure the mechanical vacuum pump to work and that way preserve vacuum for the brake booster. 


Edited by Loren
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