Solved - Check Engine + ABS + PSM Errors Gone after MAF - Rennlist - Porsche Discussion Forums

996 Forum
Sponsored by:
Sponsored by:

Solved - Check Engine + ABS + PSM Errors Gone after MAF

Thread Tools Search this Thread
Old 03-20-2017, 04:00 PM   #1
Thread Starter
Ian964's Avatar
Join Date: Nov 2002
Location: New Hampshire
Posts: 747
Default Solved - Check Engine + ABS + PSM Errors Gone after MAF

2003 C4S. My ABS/PSM lights went on about a week before I put the car away for the winter. Shortly thereafter the Check Engine ("CEL") light also went on. OBD was telling me it was a MAF issue, but I didn't think this was related to the ABS/PSM. The shop down the road just had an OBD scanner and not anything Porsche specific.

I bought a cheap MAF on eBay that came with the security torx. Install took me about 25 minutes. The ABS/PSM lights never came back on but the CEL remained. I drove it for about 10 minutes and the CEL finally went away. So nice to have a clean dashboard and I was able to actually fix it myself!

Anyway, I'm just posting this because when I was searching the forum for answers, the ABS/PSM issue did not seem to go hand-in-hand with the MAF failure.

I went with the cheap MAF just because I wasn't sure if it was the issue. For 50 bucks it was worth finding out. Should I upgrade to a Bosch or OEM MAF or just wait for this one to fail?
Ian964 is offline   Reply With Quote
Old 03-20-2017, 04:27 PM   #2
Schnell Gelb
Rennlist Member
Join Date: Apr 2014
Location: Los Angeles
Posts: 1,964

There are 2 MAF part numbers. New & old.
To get the correct one, start with the Porsche part number for your year. Do not rely only on an Interchange part number.If it has the correct part number .it is O.K. A quick visual is the droopy 'nose' on the later MAF. You'll see the difference when you start lookingat the alternatives.
Schnell Gelb is offline   Reply With Quote
Old 03-20-2017, 04:32 PM   #3
Join Date: Mar 2011
Posts: 1,080

had the same thing 2 weeks ago when I took the 4.0 out of storage. CEL, PSM and ABS light came on.

"great....NOW what?"

plug in scanner.. code for MAF. light bulb goes off in my head as I was doing some work on it over the winter and I probably forgot to plug the MAF in. low and the trunk lid and sure enough I forgot to plug the MAF back in.

plugged it back in...started the car...clear of any lights. sweet!
AWDGuy is online now   Reply With Quote
Old 03-23-2017, 05:26 PM   #4
mharrison's Avatar
Join Date: Jan 2005
Location: Mississippi
Posts: 933

Glad that you got it cleared up. I experienced that about a year ago. Being the cheap SOB that I am, I cleaned the MAF sensor with this and all was good with the world and has remained so.
mharrison is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Another ABS/PSM light issue...... ScoobyDoo555 996 Forum 23 Yesterday 04:04 PM
Help with rough warm idle/ABS-PSM codes! NCdog 996 Turbo Forum 14 03-29-2017 07:48 PM
New MAF Same problems fbgh2o 996 Turbo Forum 15 06-16-2016 11:07 AM
New MAF Same problems fbgh2o 996 Forum 3 05-27-2016 10:26 AM
MAF replacement time? fbgh2o 996 Forum 5 05-14-2016 12:40 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -3. The time now is 07:02 AM.

Copyright ę 1998 - 2017
  • Ask a Question
    Get answers from community experts
What's your question?