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 Mike Your Own Question

Mike
Mike, UK Nissan Car Mechanic
Category: Nissan
Satisfied Customers: 39198
Experience:  Tech Expert
9261905
Type Your Nissan Question Here...
Mike is online now

I have a 2000w reg terrano 2.7 engine light on diagnostic code

Resolved Question:

I have a 2000w reg terrano 2.7 engine light on diagnostic code 34 knock sensor is this the knock sensor at fault and where is it located or is there another cause for code 34 it has started to work ok a couple of times then engine light comes back on and engine not running well
Submitted: 2 years ago.
Category: Nissan
Expert:  Mike replied 2 years ago.
Hello and Welcome -

My name is XXXXX XXXXX Im happy to help/ advise you.

There is no knock sensor on a diesel engine no..

Code 34 on the engine you have relates to Injector needle lift sensor fault . If you look at the injectors, one has a wire going to it - usually no.3.. sometimes no.1... but whichever its on , thats the one.

Check the wiring there to it - inc the connection for any faults... If no faults, the injector usually needs to be changed to cure that.

Just one other thing - if you have recently had the fuel filter changed or, check for any leaks of fuel etc - air in the fuel system can also create this code as it affects the sensor itself - so bear that in mind too.
Let me know if you need anything else at all --

.>> >> > ..Meantime..............Please do click on the "OK/ Excellent ratings" for me as that's how Im credited for helping you - Thank you in advance for that...

You can and are most welcome to get back to me anytime you might need - clicking the OK ratings does not close you out at all..


Rgds, MIKE.
Mike, UK Nissan Car Mechanic
Category: Nissan
Satisfied Customers: 39198
Experience: Tech Expert
Mike and other Nissan Specialists are ready to help you
Customer: replied 2 years ago.

hi mike will look into that i think fuel filter has just been changed as car was serviced recently will come back to you if i have any more problems

Customer: replied 2 years ago.

Hi mike thanks for information have tried bleeding the system no improvement looks like it is needle lift sensor I have disconnected it and it makes no difference to running or light how do you cancel the management light ,can you override the sensor, is it critical. sorry to ask silly questions but money tight told injector is about £400

Expert:  Mike replied 2 years ago.
Hello agai Norman..

I understand, that's fine,

I'm afraid you cannot cancel the light..the ecu puts the light on when such a fault is detected...so it won't let the light out until the fault itself is resolved.
Nor can you override the sensor I'm afraid...it's electronic , too, the ecu " knows " it's there ( and faulty ) , hence the above.

The only answer is to have it replaced I'm afraid.. If you look around for a local diesel specialist, often handy can do such work / supply such parts considerably cheaper than Nissan .. So as a tip, that's the best I can suggest on this one Norman.

I hope it all works out ok for you.

Best rgds, MIKE.


What Customers are Saying:

 
 
 
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
< Previous | Next >
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil
  • 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
  • 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
  • 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
  • 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
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • 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
 
 
 

Meet The Experts:

 
 
 
  • Jake

    Jake

    Nissan Technician

    Satisfied Customers:

    220
    Experienced collision repair technician, Pulaski Tech graduate and DSM hobbyist.
< Previous | Next >
  • http://ww2.justanswer.com/uploads/05/05muranosl/2012-1-26_195212_JA.64x64.JPG Jake's Avatar

    Jake

    Nissan Technician

    Satisfied Customers:

    220
    Experienced collision repair technician, Pulaski Tech graduate and DSM hobbyist.
  • http://ww2.justanswer.com/uploads/FO/fordtwo/2014-12-19_163422_arrepair.64x64.jpg Robert's Avatar

    Robert

    UK Qualified Car Technician

    Satisfied Customers:

    81
    self employed in the motor repair buisness 19years
  • http://ww2.justanswer.com/uploads/IN/indytech/2013-8-8_102717_SantoDomingo146598x6402.64x64.jpg indy-tech's Avatar

    indy-tech

    Import tech

    Satisfied Customers:

    77
    Import technician
  • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

    Matt

    Mechanical Engineer

    Satisfied Customers:

    4469
    BEng hons Mech engineering, in auto industry 22 years
  • http://ww2.justanswer.com/uploads/TE/techmachine/0601821347169_717372168_8940977_39623330_o.64x64.jpg Ross's Avatar

    Ross

    Diagnostic and repair technician

    Satisfied Customers:

    453
    Licensed diagnostic and repair technician
  • http://ww2.justanswer.com/uploads/RO/RobMechanic/068.64x64.JPG Rob's Avatar

    Rob

    ASE Certified Technician

    Satisfied Customers:

    82
    30 years trade experience