MAF or O2? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Earn · 07-18-2011, 01:16 PM

I have a CEL and weird rpm revs around 2k rpm and hesitation when mashing the gas. I recently had a seal replaced that was said to be the cause of the bank codes. I havent run the recent codes to see if they are the same I need to pick up a reader. Ive read a lot and it seems to point to behavior that would require O2 sensor replacments. Could this be a MAF sensor issue and not O2? I know the specific codes would help but I dont have them as of now. I know it was showing codes for both sets of banks recently. Any help.is appreciated.

Topless · 07-18-2011, 01:32 PM

Get the new codes. Anything else is just a shot in the dark.

Earn · 07-18-2011, 01:50 PM

Ill go and buy a reader and get the codes ASAP. I hope its something I can fix im tired of dealing with a shop and being out the car for a couple of days.

Earn · 07-19-2011, 11:59 AM

I stopped at Auto Zone and got my codes. Now Im concerned.

P0740- Torque converter/clutch or transmission

P1128- Unknown

P1130-Unknown

I have a 2001 Tip with 99K on the Odometer

I've called my local shop and Im taking in in tomorrow morning. I'm going to look up the codes when I get home shortly. I'm guessing this won't be an easy fix?!

Earn · 07-19-2011, 12:04 PM

Looks like P1128 and P1130 are the same errors I had before getting the seal fixed. Could this be a bad MAF? How is the P0740 related?

blinkwatt · 07-19-2011, 12:15 PM

My 99' had a CEL with P1128 and P1130. It had a wicked hesitation around 2k from time to time that would jolt the car. MAF was bad.

Best bet dude instead of just throwing parts to it. Go to a reputable shop around town. Ask them to diagnosis it. If they say its the MAF,order it from ************************************************************ and you can swap it out on your own.