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Registered User
Join Date: Jul 2012
Posts: 1
Porsche Crest active Brake booster 814

Hi wondering if anyone can offer assistance
have a 2003 cayenne Turbo. PSM light came on (Yellow) and also a red warning, (WARNING BRAKE PROPORTIONING)
Purchased durametric software and Read fault codes,
had a code for brake pedal distance sensor and active brake booster.
Replaced distance sensor. That code cleared and did not return.
Code 814 still in system. (Durametric software does not tell me what it is other than Active Brake booster)
I have no booster fault codes.
There are no leaks to the booster and it holds vacuum, the pipes all look good.
Does any know what a code 814 is?
Does anyone know what active brake booster means in Porsche language?
Does anyone have any experience in this particular area?
I will give full feed back if I get some assistance.
many thanks
Old 07-31-2012, 12:55 AM
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jrumiano's Avatar
Join Date: Sep 2007
Location: Bucks County, PA
Posts: 138
This might help.

Good luck,
1985 3.2 911
Old 07-31-2012, 02:47 PM
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It'll be legen-waitforit
stealthn's Avatar
Join Date: Jan 2002
Location: Calgary, Canada
Posts: 4,026
How often do you change your brake fluid?

Peppers need it way too often, not sure what the cost of an ABS module is but I bet it's not cheap

Bob James
Bob James
'79 911SC Targa - Sold
06 Cayman S
Old 08-01-2012, 05:59 PM
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