Sky InsuranceEM Tuning
Results 1 to 6 of 6
  1. #1
    1st Gear

    Status
    Offline
    Join Date
    Feb 2011
    Location
    Somerset
    Posts
    241

    Fault code help.

    On my way to work this morning my mil light came on, when I checked it with my code reader it said, PO172 system over rich bank one, does anyone have any idea what it means and what the cause could be, I cleared the code, then went for a blast and all is well, thanks for any help.

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    s33nyboy12's Avatar
    5th Gear

    Status
    Offline
    Join Date
    May 2012
    Location
    East midlands
    Posts
    1,380
    I had this, my mate come out with vag com asked me where I'd bin, told him work then petrol station, he cleared code went to my fuel cap tighten it a click then said there sorted and light not bin back n since, this was 2 weeks ago.

  4. #3
    1st Gear

    Status
    Offline
    Join Date
    Feb 2011
    Location
    Somerset
    Posts
    241
    Thanks for that, funny enough, I got petrol the night before, I just went out and tightened my cap a few clicks too, just have to wait and see what happens now, cheers.

  5. #4
    <tuffty/>'s Avatar
    Badger 5 Edition

    Status
    Offline
    Join Date
    Sep 2008
    Location
    Gloucestershire
    Posts
    15,559
    16556/P0172/000370 - Ross-Tech Wiki

    16556/P0172 - System Too Rich, Bank 1
    Possible Symptoms

    Irregular behaviour

    Possible Causes

    Fuel system
    Excessive fuel pressure
    Leaking or contaminated fuel injectors
    Leaking fuel pressure regulator
    Low fuel pressure or running out of fuel
    Vapor recovery system
    Air leaks after the MAF
    Vacuum leaks
    Improper seated engine oil dipstick
    Stuck EGR valve
    Oil overfill
    Cam timing
    Cylinder compression
    Exhaust leaks before or near HO2Ss.

    Seen this before on BAM engined S3's... what year is your car?

    In the cases I have seen the rubber fuel hoses rot and the 'stuff' collects in the FPR giving increased fuel pressure and thus the too rich fault code...


    Looks like this...


    <tuffty/>
    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

  6. #5
    1st Gear

    Status
    Offline
    Join Date
    Feb 2011
    Location
    Somerset
    Posts
    241
    Wow now that's a big list thanks, the car is an A3T 2001 with AUM.

  7. #6
    1st Gear

    Status
    Offline
    Join Date
    Feb 2011
    Location
    Somerset
    Posts
    241
    Quick update, I did 360 miles since I wiped the code from the ecu and still no probs, thanks for info chaps :-)

 

 

Similar Threads

  1. I got a fault code - help please. Code 18057.
    By DJ_Troopa in forum A3/S3 Forum (8L Chassis)
    Replies: 2
    Last Post: 30th July 2011, 10:29
  2. Replies: 2
    Last Post: 19th December 2010, 20:41
  3. Replies: 5
    Last Post: 18th January 2010, 23:36
  4. fault code help
    By Audi_nut in forum A3/S3 Forum (8L Chassis)
    Replies: 6
    Last Post: 5th May 2008, 20:33
  5. possible fault code?
    By killa_z in forum VCDS (formerly VAG-COM) forum
    Replies: 1
    Last Post: 28th November 2007, 00:58

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO