Jump to content

The RennTech.org community is Member supported!  Please consider an ANNUAL donation to help keep this site operating.
Click here to Donate

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)
Sign in to follow this  
villageidiot

Abs/psm Faultabd

Recommended Posts

Hi, I have a fault with my 996 C2 year 2000 which is that when I accelerate both the abs and psm warning lights come on at 5000 rpm, it doesn't seem to matter weather you accelerate hard or gently as soon as you hit 5000 rpm they light up. When you stop and remove the key from the ignition and then restart, the lights go out and everything is back to normal.

Apart from this fault the car drives perfectly and has done only 18000 miles, Has anyone ever experienced this fault and if so , what was the cure.

Share this post


Link to post
Share on other sites
    You can remove these ads by becoming a Contributing Member.

You might want to check your MAF sensor at your intake to see maybe if anything might be lodging up against it. Something could be getting sucked up against it at that engine RPM regardless how fast it takes for the engine to reach it. It can be something small, so check out the air intake box too. While you're at it, clean the air filter. Hope you find the problem.

P.S. Welcome to the board! :welcome:

Edited by WARDHOG

Share this post


Link to post
Share on other sites
You might want to check your MAF sensor at your intake to see maybe if anything might be lodging up against it.

Why would a MAF sensor blockage cause the ABS and the PSM light to illuminate ???

Share this post


Link to post
Share on other sites
You might want to check your MAF sensor at your intake to see maybe if anything might be lodging up against it.

Why would a MAF sensor blockage cause the ABS and the PSM light to illuminate ???

Good question. One of the the car's safety features is measuring the amount air rushing into the intake verses the MPH. The car thinks it's out of control because the speed is not right compared to the TPS and the MAF sensor. If the MAF has something lodged against it, the engine thinks you are at idle because the MAF sensing wires are shorted. So, that will cause the engine to start to close the throttle body flap to try and slow down the car because remember, the car MPH is still higher than what it should be at idle. So actually, the car thinks it has two problems. The ABS and PSM lights came on because of that because the driver failed to correct the out of control situation by applying the brakes at that precise moment. Does that all make sense to you now. If that doesn't, maybe Toolpants and Loren can explain better. <_<

Share this post


Link to post
Share on other sites

:cursing: Got same problem on my 99C4 @ 34000mls, what can I do? How do I open airbox, what do I do when I have?

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.