How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Jake Your Own Question

Jake
Jake, Technician
Category: Audi
Satisfied Customers: 2398
Experience:  Over 30 years experience, 17 years with Audi, Factory trained
Type Your Audi Question Here...
Jake is online now
A new question is answered every 9 seconds

Audi A6 Quattro: Hi Jake,I just recently bought a 2000 A6

Resolved Question:

Hi Jake,
I just recently bought a 2000 A6 Quattro 4.2L After a couple of days of normal driving the check engine light came, check the codes and this is what ive got
P 1131
P 1138
P 1113
P 1136
P 0455

So... where should I start? replace both front O2 sensors? Vacuum lines?
Submitted: 9 months ago.
Category: Audi
Expert:  Jake replied 9 months ago.

17521/P1113 - Oxygen (Lambda) Sensor; B1 S1: Internal Resistance too High

17539/P1131/004401 - Oxygen/Lambda Sensor Bank 2 Sensor 1: Internal Resistance too High

17544/P1136/004406 - Fuel Trim: Bank 1 (Add): System too Lean

17546/P1138 - Fuel Trim: Bank 2 (Add): System too Lean

16839/P0455/001109 - EVAP System: Large Leak Detected

Hello,

Thank you for choosing me with your question.

Ok, let's start with the OXS codes first. Audi's are really good about being correct when they store an OXS code. Unless the wiring is damaged going to the sensor, replace both Bank one and Bank two OX Sensors. They are both the Pre-catalyst Sensors mounted directly behind the cylinder heads. The electrical connectors will be black in color. They are the same sensor so you will need two. Audi #078 906 265M, Bosch # XXXXX ONLY USE AUDI OR THE BOSCH SENSOR I LISTED. DO NOT BUY A CHEAP AFTERMARKET SENSOR.

 

The EVAP large leak code is typically a gas cap that is missing, loose or failed so check that first. If it is there and tight you might even just replace it and see if the code returns as you don't have a gas cap tester and they are relatively cheap.

 

As far as the lean codes go they are both Add (additive). In Audi speak this means at idle. Without seeing all the fuel trim data in MVB #32 (Measuring Value Block). I can't say for certain, but that is where a vacuum leak would show up in the Add data. With the top engine cover removed inspect all the vacuum lines, especially going down the left (driver's) side of the intake manifold and going to the front of the intake manifold. These hoses typically shrink, leak, and cause other codes. Repair any problems detected. If you don't see any problems start the engine and idle, then inspect for a "hissing" sound to try and find the source of the leak and repair if necessary.

 

Make the recommended repairs, clear the codes, and see what returns.


I hope that I have answered your questions and addressed your concerns. If you have any more questions for me please don’t hesitate to ask. I want you to be 100% satisfied with my answer.

 

I check in, in the mornings and evenings, so l will answer any further questions at those times

Bonuses are always APPRECIATED. Please rate my answer as OK, GOOD, or EXCELLENT. With a lower rating I will not be compensated. Please contact me with your concerns if you cannot rate my answer OK, GOOD or EXCELLENT.

Thank You!
Jake “The Audi Doctor”

Expert:  Jake replied 9 months ago.
Hi, checking in to see how you were doing on this and if you had any questions.

Also, something I forgot to mention on the 2000 year model 4.2s they had a pattern failure for this year model only. What it is is that the variable length runners in the intake manifold seize up. If you look at the two vacuum motors at the front of the intake manifold with the engine not running/off they will be in the relaxed mode (high RPM/long air path). When you start the engine the vacuum motors should pull the manifold flaps into the activated mode (low RPM/short air path) If they do not move freely they will not perform properly and possibly break a plastic vacuum motor link. I don't know that you would detect the performance difference, and it will not set a code, but it is something to consider if you want to get the vehicle squared away.

Best of luck and let me know if you have any questions.

Jake
Jake, Technician
Category: Audi
Satisfied Customers: 2398
Experience: Over 30 years experience, 17 years with Audi, Factory trained
Jake and other Audi Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
 
 
 

Meet The Experts:

 
 
 
  • AudiDoc

    Independent Audi Shop Owner

    Satisfied Customers:

    1681
    I've been working on Audis since I was 18 and own an independent Audi repair and performance shop
< Last | Next >
  • http://ww2.justanswer.com/uploads/audidoc/2008-12-23_175252_headshot.jpg AudiDoc's Avatar

    AudiDoc

    Independent Audi Shop Owner

    Satisfied Customers:

    1681
    I've been working on Audis since I was 18 and own an independent Audi repair and performance shop
  • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

    Matt

    Engineer

    Satisfied Customers:

    461
    Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
  • http://ww2.justanswer.com/uploads/MI/mikeamechanic/2013-4-2_175558_photo.64x64.JPG Mike Kelly's Avatar

    Mike Kelly

    Audi Mechanic

    Satisfied Customers:

    259
    17 years experience as a auto mechanic, foreign and domestic.5 years running my own repair business.
  • http://ww2.justanswer.com/uploads/FourRingsTech/2010-01-26_135603_GetAttachment.jpg Michael Miller's Avatar

    Michael Miller

    ASE Certified Technician

    Satisfied Customers:

    241
    ASE Master Technician. Audi certified, including R8 and TDI (clean diesel).
  • http://ww2.justanswer.com/uploads/NA/nabilc/2011-1-24_205715_jap500.64x64.jpg Billy's Avatar

    Billy

    Trainer/Master tech.

    Satisfied Customers:

    229
    Trainer 8+ years, Master tech. 10+ years, SAE member
  • http://ww2.justanswer.com/uploads/tsmodie/2009-6-10_144056_tim.jpg Tim Mohr's Avatar

    Tim Mohr

    ASE MASTER TECH

    Satisfied Customers:

    204
    30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
  • http://ww2.justanswer.com/uploads/CA/caprio23/2011-12-13_155550_20111213105344.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    174
    ASE Master Automobile Technician with over 20 years exp. in this field.