986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - 99 Boxster Check engine light issue ( Not Normal)

mikefocke · 07-21-2011, 05:20 AM

that all 4 were ever bad and you usually replace them individually or maybe as a pair nearest the engine and almost never should you need to do all 4. Not sure I've ever seen codes for all 4 simultaneously thrown except for some problem upstream.

But sure glad for you your sage seems to be over...

07-21-2011, 05:20 AM	#23
mikefocke Registered User Join Date: Aug 2005 Location: Sanford NC Posts: 2,583	I doubt that all 4 were ever bad and you usually replace them individually or maybe as a pair nearest the engine and almost never should you need to do all 4. Not sure I've ever seen codes for all 4 simultaneously thrown except for some problem upstream. But sure glad for you your sage seems to be over...