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 vipertech Your Own Question

vipertech
vipertech, ASE Certified Technician
Category: Jeep
Satisfied Customers: 1780
Experience:  Jeep factory certified technican
3256298
Type Your Jeep Question Here...
vipertech is online now
A new question is answered every 9 seconds

2002 Jeep Liberty: P1686 and P1698 codes

Resolved Question:

I have a 2002 Jeep Liberty and am getting P1686 and P1698 codes. What does this mean?
Submitted: 5 years ago.
Category: Jeep
Expert:  vipertech replied 5 years ago.

Good evening, the code P1686 is no SKIM BUS message recieved. The means that there was no message recieved from the special gray key security module in simple terms.

 

P1698 is no BUS message from the trans controller.

 

Both of these codes require some detailed checking and diagnosis. Depending on if both of these codes are active.....and not stored, then the codes may be related. There is no one common cause for these codes. You will need to have access to a scanner that can access both the trans controller as well as the SKM module. If you have the correct scanner than let me know and I will give you the detailed flow charts to check the codes.

 

The possible cause could be wiring or a possible defective control module.

 

If this answers your question than please press "ACCEPT". If you need more help then please let me know. Thanks

Customer: replied 5 years ago.

Im guessing both of these codes are active. The codes were cleared and they came right back. I have a scanner that does check the trans control as well as the SKM module.

 

When you say the "grey Key", I assume that you are referring to the grey ignition key. If so, we tried the spare key and it did not have any affect on the check engine light. The light still remained illuminated.

 

When I cleared the codes again and immediately rescanned, I then got a P0740, TCC circuit Malfunction. Does this help diagnose the issue?

Expert:  vipertech replied 5 years ago.

Yes, I am speaking of the special Grey key. The key wont be the issue, the lack of communication between control modules will be. Being that they did come back then the codes are active. At this point you will need to run the test for the codes that you found. Here are the flow charts:

 

P1686

 

P1698

 

P0740

 

As mentioned, there is no common cause for these codes so you will need to run the tests.

 

 

vipertech, ASE Certified Technician
Category: Jeep
Satisfied Customers: 1780
Experience: Jeep factory certified technican
vipertech and 2 other Jeep 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:

 
 
 
  • Thank you so much for your answer. My initial estimate was $325; I got it done for $100 - part and labor. Lynn B. Ormond Beach, FL
< Last | Next >
  • Thank you so much for your answer. My initial estimate was $325; I got it done for $100 - part and labor. Lynn B. Ormond Beach, FL
  • I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat. Stan Sayre, PA
  • 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
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
 
 
 

Meet The Experts:

 
 
 
  • Mark

    22 Year Factory trained technician

    Satisfied Customers:

    2548
    Jeep factory training........25 years in the industry.
< Last | Next >
  • http://ww2.justanswer.com/uploads/MO/MoparCertified/2012-6-7_4142_mechanic.64x64.jpg Mark's Avatar

    Mark

    22 Year Factory trained technician

    Satisfied Customers:

    2548
    Jeep factory training........25 years in the industry.
  • http://ww2.justanswer.com/uploads/jeep10000/2008-9-18_222938_192601.jpg Chris's Avatar

    Chris

    Shop Foreman

    Satisfied Customers:

    2265
    Jeep and ASE Certified Master Tech
  • http://ww2.justanswer.com/uploads/ke4ich/2009-08-12_212931_DSC02211.JPG moparfl's Avatar

    moparfl

    ASE Certified Technician

    Satisfied Customers:

    1128
    ASE Master Tech Chrysler Dodge Jeep Master Tech
  • http://ww2.justanswer.com/uploads/nvltgo/2010-10-18_211525_youranswers.jpg Dave's Avatar

    Dave

    Jeep Master Tech

    Satisfied Customers:

    1120
    Chrysler Triple Master, ASE master Tech AA degree in Auto.
  • http://ww2.justanswer.com/uploads/tsmodie/2009-6-10_144056_tim.jpg Tim Mohr's Avatar

    Tim Mohr

    ASE MASTER TECH

    Satisfied Customers:

    805
    30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
  • http://ww2.justanswer.com/uploads/CD/CDJMastertech/2012-6-9_201455_JustAnswerProfilelarger.64x64.JPG CDJMasterTech's Avatar

    CDJMasterTech

    Jeep MasterTech

    Satisfied Customers:

    576
    Factory trained and certified Jeep Master Technician, ASE Master Technician
  • http://ww2.justanswer.com/uploads/jeepmopar76/2009-3-18_2204_63998760.jpg jeepmopar76's Avatar

    jeepmopar76

    Jeep/Chrysler Triple Master Tech

    Satisfied Customers:

    572
    32yr ASE Master Tech, 9yr Chrysler Master Tech, 19 yr Jeep Dealership service including AMC/Eagle