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    VWVortex


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    Thread: 17964 - Charge Pressure Control: Negative Deviation & 17536 - Fuel Trim: Bank 1 (Mult): System too L

    1. 07-15-2003 08:01 PM #1
      i have a CEL and limp mode... i just got a VAG-COM and found these 2 faults..

      2 Faults Found:
      17964 - Charge Pressure Control: Negative Deviation
      P1556 - 35-00 - -
      17536 - Fuel Trim: Bank 1 (Mult): System too Lean
      P1128 - 35-00 - -

      i cleared them but they came back pretty quick...

      some details that might help :: '00 1.8T (APH) NB 5spd, Upsolute Chip, 2.5" TechTonics Cat-back, 4bar FPR, TT DV, replaced crappy braided vacuum lines..

      anyone have any suggestion as to what is wrong??..

      what does "Bank 1 (mult)" mean??..

      is there anything i can test or log to help figure out what is up??

      thanks a bunch..


    2. Member
      Join Date
      Mar 19th, 2001
      Posts
      1,344
      Vehicles
      2001 VW Beetle turbo, 2013 Camaro SS
      07-15-2003 08:04 PM #2
      I have that same fricken Charge Pressure Control: Negative Deviation code as well. ARRRRGH!

    3. 07-15-2003 08:14 PM #3
      This is in the 1.8t faq. It could be the maf or vacuum leak

    4. 07-24-2003 03:49 PM #4

      problem solved
      17536 - Fuel Trim: Bank 1 (Mult): System too Lean
      P1128 - 35-00 - -
      i first thought it was the front O2 sensor, but when i replaced it, it was the same... with some help from Rodney at http://www.bartuning.com (and others) we figured it was the MAF.. i replaced it last night and it is running great


      as for the::
      17964 - Charge Pressure Control: Negative Deviation
      P1556 - 35-00 - -
      we are pretty sure there is a boost leak, on mine it seems to be between the IC and the manifold b/c there is oily gooey residue down in that area... i am going to check for leaks.. i will let you know if i find the problem...

      thanks..


    5. Member Berto's Avatar
      Join Date
      Sep 14th, 1999
      Location
      Madrid / Spain / EU
      Posts
      711
      09-24-2004 11:48 AM #5
      what happened with the negative deviation?
      do you have logs of the group 204? or group 115?
      what it's your maximum boost pressure?
      BERTO / VAGclub.com

      Audi S3 TFSI quattro revo, and s-tronic!
      Passat 1.8T K04 revo
      Audi A4 1.8T Avant

    6. 09-30-2004 03:13 PM #6

      check my other thread on this topic...

      http://forums.vwvortex.com/zerothread?id=1245887


    7. 12-28-2007 02:15 PM #7
      can you please tell me what the IC is and where I can find it?

    8. 12-28-2007 10:39 PM #8
      The IC is short for intercooler. It is located in the passenger side front fender area. I'm assuming left hand drive when I say that though. You will possibly have to remove the inner fender cover to see where the hoses connect to the intercooler.

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