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jonsilvester replied to 993GT2's topic in 9PA, 9PA1 (Cayenne, Cayenne S, Cayenne Turbo, Cayenne Turbo S)Would this maybe cause a slight loss of power also? I have the same perisistent fault code. Cleared it and it came back within a couple starts. Is this a DIY repair for someone somewhat mechanically inclined or something that I should have a Porsche mechanic do? I have the same... a 2004 Cayenne S (US model).