986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Help. CEL won't go away after Engine Swap

dmenn · 11-15-2008, 04:24 AM

I believe those codes are for the pre-cat O2 sensors on both sides of the car. Usually both O2 sensors won't go bad at the same time. I've heard this could indicate a MAF sensor problem, but I'd search through some archives to confirm that.

11-15-2008, 04:24 AM	#4
dmenn Registered User Join Date: Apr 2006 Location: Collegeville, PA Posts: 61	I believe those codes are for the pre-cat O2 sensors on both sides of the car. Usually both O2 sensors won't go bad at the same time. I've heard this could indicate a MAF sensor problem, but I'd search through some archives to confirm that. __________________ 2000 Boxster S, Arctic Silver, Natural Grey Leather Factory: Aerokit I, 18" Sport Classics, Xenons, Heated Seats, Premium Sound, and more.. Upgrades: Bumper Plugs, Door Plug, Clear Sides, Clear Tails, Clear Bulbs, Painted Bumperettes, 997 Shifter, EVO Intake