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)

CEL Codes, cold start only - seems (?) like an odd mix?

Recommended Posts

2001 Cabriolet, Tiptronic.


Got a whole handful of codes today after the car had sat for five hours in Florida shade - maybe not a 100% cold start, but not anywhere near temperature.


Notably, the secondary air pump did not come on.


New Beru coil packs and Bosch plugs all around. Start up / idle RPM only: 600 - 1,100 rpm.


Based on my searches only, it seems I'm looking at two different things - the secondary air pump and 1128, 1130 can be connected to the misfire codes. Lots of threads here just on those codes by themselves.


But the 1341, too, on cold start, well under 3,000 rpm? I mean, good threads here too on troubleshooting that for electrical, DME, solenoid, or actuator,


But to get all these at the same time? Am I ignorantly looking for some correlation between cause and effect that may or may not exist?




Porsche fault code 174 - Camshaft adjustment bank 1 below limit value


Porsche fault code 62 - Misfire damaging to cat. converter


Porsche fault code 63 - Cylinder 1 misfire damaging to cat. converter


Porsche fault code 360 - Oxygen sensing adaptation idle range bank 1


Porsche fault code 361 - Oxygen sensing adaptation idle range bank 2

Link to comment
Share on other sites

  • Admin

Possible causes:

– Incorrect signal from MAF sensor
– Intake air system leaking
– Fuel pressure too low
– Volume supply of fuel pump too low
– Fuel injectors fouled
– Exhaust system leaking

  • Upvote 1
Link to comment
Share on other sites

Thanks, Loren - per other threads here, I've cleaned the MAF sensor and checked its actual values via the Durametric (V did increase with RPM, as expected), and I've run a tank of Techron to see if I could cheat and easily clean the injectors. New fuel filter, too.


None of which are dispositive on those issues, though, of course, and I haven't done anything to test fuel pressure or flow rate or for intake air leaks, but


Next place I will look is the exhaust, because I took the mufflers out when I did the coils and plugs, and these codes weren't happening before. Simplest explanation might be the most likely, if I didn't button up the exhaust properly, there you go. 


Regardless, I suppose there's no alternative to methodical and systematic troubleshooting, so thank you for the list!

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.

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.