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 Richard Your Own Question

Richard
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 13887
Experience:  12 years at a Jaguar dealer as technician and shop foreman.
10437779
Type Your Jaguar Question Here...
Richard is online now
A new question is answered every 9 seconds

Jaguar X-Type The battery light on my 2005 X-Type Jag comes

Resolved Question:

The battery light on my 2005 X-Type Jag comes on when driving about half the time. The OBDII code is P1111 which translates to Intake Air Temp Sensor Intermittent High Voltage. Does this mean that the sensor is causing the high voltage issue or that the alternator is sending to much current? What do I fix? and Where is the IAT? Can i change it out or is it part of the MAF or is something else the cause?
Submitted: 3 years ago.
Category: Jaguar
Expert:  Richard replied 3 years ago.

Hello and welcome to justanswer.com

 

WHen the battery light comes on this means there is a problem with the charging system and usually not an engine management problem. The code P1111 is a readiness code in which there is no repair needed and it does not need to be cleared. The battery and alternator should be tested. I also see issues with the battery cables causing this.

Customer: replied 3 years ago.
Carmax claims that they tested the charging system several times and could find nothing wrong. Meanwhile the battery died last weekend and I had to have it recharged at Autozone. How do I figure out what the problem is so I can fix it?
Expert:  Richard replied 3 years ago.
A digital voltmeter is needed to check this. We need to check the charging system voltage with a digital voltmeter with all accessories on to see if the voltage drops at the battery terminals then check it at the alternator power lug. If the voltage remains above 13.5 then this may be a problem with the cluster. You may even see around 15 volts which is normal. If the voltage is below the 13.5 then I suspect a problem with the wiring to the alternator or that negative cable. We need to check this when the warning light comes on. we can put the instrument cluster in engineering mode to see what voltage the cluster is seeing. First turn off the engine. Press and hold the trip button in the turn signal stalk then start the engine while holding the trip button. You will see the instrument cluster go into engineering test mode. Release the trip button then keep pressing it until the voltage reads a digital number.
Customer: replied 3 years ago.
One last question. I held the trip button and started the car. I did not see the instrument cluster do anything digital. The only thing digital is the odometer and it didn't look any different then normal. Am I missing something?
Expert:  Richard replied 3 years ago.
IT should say engineering test mode. Try it again and keep holding that trip button on the turn signal switch.
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 13887
Experience: 12 years at a Jaguar dealer as technician and shop foreman.
Richard and other Jaguar 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:

 
 
 
  • Anthony

    ASE Certified Technician

    Satisfied Customers:

    351
    ASE Master Automobile Technician with over 20 years exp. in this field.
< Last | Next >
  • http://ww2.justanswer.com/uploads/CA/caprio23/2011-12-13_155550_20111213105344.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    351
    ASE Master Automobile Technician with over 20 years exp. in this field.
  • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

    Matt

    Engineer

    Satisfied Customers:

    295
    Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
  • http://ww2.justanswer.com/uploads/MO/molurch/2012-6-6_214526_500.64x64.png Don 'Mo Lurch''s Avatar

    Don 'Mo Lurch'

    Jaguar Mechanic

    Satisfied Customers:

    180
    Import Training, Heavy Line Mech, Mobile Electronics. Sales, Installation & Repair for 30 years
  • http://ww2.justanswer.com/uploads/EU/eurotec/2012-6-11_13153_mpjaphoto.64x64.JPG Marty's Avatar

    Marty

    European Car Expert

    Satisfied Customers:

    170
    ASE & Bosch Certified Master Tech. Over 30 years experience.
  • http://ww2.justanswer.com/uploads/audidoc/2008-12-23_175252_headshot.jpg JagDoc's Avatar

    JagDoc

    European Shop Owner

    Satisfied Customers:

    127
    20 years of experience working with Jaguars. Independent European shop owner and technician.
  • http://ww2.justanswer.com/uploads/jcjcrespo/2009-06-07_193210_xtratech.jpg Juan Crespo's Avatar

    Juan Crespo

    ASE Certified Technician

    Satisfied Customers:

    96
    30+ years experience
  • http://ww2.justanswer.com/uploads/gemmechanic/2009-05-04_110543_dsc07268.jpg gemmechanic's Avatar

    gemmechanic

    Mechanic

    Satisfied Customers:

    84
    Advanced Trade Certificate in Automotive engineering. 30+ years in the automotive industry