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 login 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
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • 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  
Followers 0

Cen-Tech Code Reader 94217

2 posts in this topic

I have a CAT that seems to be having issues (or maybe the O2 sensor). It trips a CEL once in a while - maybe once a month or two or three. Anyway, after a few trips, it resets and the CEL goes off - until the next time. But I don't want to miss an important (or just another) CEL in the meantime, and the car will be in the shop to fix the offending part soon enough anyway.

So I decided to get a code reader to check the code when it happened, so I don't have to run to the dealer every time. If it's the same code as always, I want to reset it.

So, I got a Cen-Tech 94217 Code Reader at Harbor Freight (http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=94217). This appears to be a rebadged Autel Geniscan GS400 (http://www.auteltech.com/gs400.htm). Everything is the same, right down to the manual.

Now the kicker, it accesses the car, reads the codes and displays them. I had a P0420 code.

BUT, when I try to erase the code, I get an "Erase Failure!" message.

I'm guessing that this is the reader, and not a Porsche specific issue.

Any thoughts?


MY00 C2 Coupe

Appears to be DME 7.2

Edited by td873

Share this post

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

You need to make sure you don't have any other fault codes. If you got an aging sensor fault code also then it could be a bad sensor not the cat. If there really are no codes then you may have a bad cat.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  
Followers 0