Results 1 to 6 of 6

Thread: Peake Code 2A6B (and other codes) Valvetronic Power Limitation

  1. #1
    Join Date
    Sep 2011
    Location
    Tampa
    Posts
    63
    My Cars
    2001 5301 5spd with BBS

    Peake Code 2A6B (and other codes) Valvetronic Power Limitation

    Guys I have the following codes from my Peake code reader:
    2A6B Valvetronic Power limitation.
    29E7 Mixture adaption at idle speed part time
    29E8 Mixture adaption 2 at idle speed part time
    29EF Mixture adaption total fault
    29FO Mixture adaption 2 total fault
    2E95 Generator
    2E9F Oil status sensor

    Battery is less than a year old. Car was fine until last week. Check engine light says increased emissions, engine is NOT in limp mode. About two weeks before light came on, engine would have an intermittent rough idle, not bad just annoying.

    Suggestions please.... Herb.... anyone..... Thanks very much.
    PS I assume "2" means bank 2?

  2. #2
    Join Date
    Sep 2011
    Location
    Tampa
    Posts
    63
    My Cars
    2001 5301 5spd with BBS
    OK Guys I cleared the codes and two days later only these four showed up. Thoughts please.
    29E7 Mixture adaption at idle speed part time
    29E8 Mixture adaption 2 at idle speed part time
    29EF Mixture adaption total fault
    29FO Mixture adaption 2 total fault

  3. #3
    Join Date
    Feb 2010
    Location
    Hampshire UK
    Posts
    8,867
    My Cars
    99 840ci Sport Indv
    The two most likely candidates are, split diaphragms on the PCV's - and a faulty MAF (or a dodgy Chinese one fitted):

    http://www.meeknet.co.uk/E64/BMW_E63...eplacement.htm
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


    My BMW Repair YouTube Channel
    My Current 840ci Sport Individual
    My Current 650ci Sport Individual
    My E31 Repair and Information Website
    My E38 Repair and Information Website
    My E63/E64 Repair and Information Website

    Chase - Heroes to a generation

  4. #4
    Join Date
    Sep 2011
    Location
    Tampa
    Posts
    63
    My Cars
    2001 5301 5spd with BBS
    Thanks Tim. I replaced the diaphragms with BMW ones about 2 months ago. Also thought it was the MAF, an Indy replaced that for me while doing some other work. I brought it back to him because I had a sporadic mild rough idle and thought it was a defectivre MAF. He replaced it again, no real difference, but also no CEL at that time ..... Its a mystery.

  5. #5
    Join Date
    Feb 2010
    Location
    Hampshire UK
    Posts
    8,867
    My Cars
    99 840ci Sport Indv
    Is he replacing it with the real OEM version though - the after-market copies are well known to cause these very problems.....
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


    My BMW Repair YouTube Channel
    My Current 840ci Sport Individual
    My Current 650ci Sport Individual
    My E31 Repair and Information Website
    My E38 Repair and Information Website
    My E63/E64 Repair and Information Website

    Chase - Heroes to a generation

  6. #6
    Join Date
    Sep 2011
    Location
    Tampa
    Posts
    63
    My Cars
    2001 5301 5spd with BBS
    That I don't know. I'll check. Thanks Timm

Similar Threads

  1. Desperate for help?!?! Fault code 1281 and other craziness
    By Glover95 in forum General BMW Mechanical Help sponsored by RM European Auto Parts
    Replies: 0
    Last Post: 11-02-2012, 10:09 PM
  2. BIG uh-oh!! engine code 1222 and other weird things
    By omarmarji in forum 1983 - 1991 (E30)
    Replies: 8
    Last Post: 09-02-2012, 10:23 AM
  3. FS: Peake R5/SRS and Fault code/Reset reader
    By cos M3/4 in forum Engines, Performance Parts & Software
    Replies: 3
    Last Post: 01-24-2010, 08:57 PM
  4. Jlevi SW | Peake Research Engine and Airbag Code Tools
    By Edison@Jlevi SW in forum Group Purchases & Supporting Vendor Specials presented by eBay
    Replies: 0
    Last Post: 10-05-2009, 02:58 PM
  5. Code Scanner, and other parts for sale.....
    By keithroo in forum Engines, Performance Parts & Software
    Replies: 5
    Last Post: 04-23-2007, 11:20 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •