Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

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)

Aftermarket header-easy way to fix CEL?


Recommended Posts

Now that I've put on headers that bypass the front cats I'm getting the CEL. It wasn't on before so it seems likely that it's the o2 sensors. I tried to be smart and figured it was a circuit that needed completing so I cut the 4 wires and connected the two white ones (left the gray and black ones disconnected).

This didn't work :) It seems there must be some way to manipulate these wires to send the proper signal to the PCM, any ideas from electrical engineers out there? I'm really not qualified to extend the wires and drill a bung past the 2nd set of cats for the o2 sensors to go. Not a bit.

Any thoughts are appreciated. Many thanks.

Link to comment
Share on other sites

  • Admin
Now that I've put on headers that bypass the front cats I'm getting the CEL. It wasn't on before so it seems likely that it's the o2 sensors. I tried to be smart and figured it was a circuit that needed completing so I cut the 4 wires and connected the two white ones (left the gray and black ones disconnected).

This didn't work :) It seems there must be some way to manipulate these wires to send the proper signal to the PCM, any ideas from electrical engineers out there? I'm really not qualified to extend the wires and drill a bung past the 2nd set of cats for the o2 sensors to go. Not a bit.

Any thoughts are appreciated. Many thanks.

PCM is Porsche Communications Management (Navigation) - it has nothing to do with emissions and O2 sensors. So, you must mean DME?

If this a US car you can not remove the cats or one set of O2 sensors - the US DME programming won't allow the car to run with the fault(s).

You would need to re-program the DME and then the car would never pass any US smog test (that I am aware of).

Link to comment
Share on other sites

  • Admin
sorry my last car was american and had a PCM (powertrain control module) so yes I mean DME. lucky for me i dont have smog tests, so would this just be a softronic reprogramming or how would this be done?

thank you!

By a competent Porsche shop. None of the "canned" chip upgrades do this (that I am aware of) - you need special programming to ignore the after cat sensors.
Link to comment
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.

×
×
  • 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.