Jump to content

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)

HELP, Intermittant CEL and Codes


Recommended Posts

Can you knowlegable guys help me.

I have an intermittant CEL issue.

The codes are P0139 and P1117. The readed i had didnt have useful descriptions.

The CEL started coming on about 3 weeks ago, always at the same place on my drive home in the evening

(about 5 minutes from work, on an approx 50mph expressway)

It would stay on for a day or so and then not show up again for 2-4 days, then the same deal, perhaps 4 times now.

I only just got find a code reader while i still had the CEL on to read the codes

Any advice ?

BTW its a 2001 Carrera4 Cab, 14,000 miles, minor service and MAF replaced approx 6-months ago. No mods (well PSE mufflers installed)

Thanks in advance

Link to comment
Share on other sites

Check the wiring on that O2 sensor and/or clean the electrical connections (while it is cool). If that does not cure it you will need a new O2 sensor.

Those codes indicate the heater circuit is failing in that O2 sensor - not that uncommon.

One other quick thing...

Which sensor is P0139 ? Drivers side or passenger side.

Is it the sensor running along the pipe just below the rear bumper ?

Thanks

Link to comment
Share on other sites

  • Admin

Bank 1 is Cylinders 1 - 3 so that would be the left side (driver's side for LHD cars).

There are two O2 sensors for each bank of the engine - one before the cat and one after the cat. You want to inspect/replace the one after the cat (muffler side) on the left side of the engine.

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.