Transmission codes p1730 and p1774 🤔🤔🤔 - MY350Z.COM - Nissan 350Z and 370Z Forum Discussion

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Transmission codes p1730 and p1774 🤔🤔🤔

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2003-2009 Nissan 350Z

Transmission codes p1730 and p1774 🤔🤔🤔

Old 10-03-2018, 07:21 AM
  #1  
elcopeton1978
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Default Transmission codes p1730 and p1774 🤔🤔🤔

Just trying to see if anyone has had this kind of codes as i been looking all thru the web but i havent been able to find anything so here is my problem.
i have a 2003 350z with 147000 miles on it and lately is been giving me the transmission codes p1730 and p1774 and everytime the check engine pops up i can feel a little tump under the car and after that car gets into limp mode so after that car gets stuck in 2nd gear and it seem to be related to the tcm no getting the right info from the speed sensor , throttle body.
manual shows as possible causes are
harness or connectors open or shorted
low cost brake selenoid
atf pressure switch
so i been searching all over the web and cant find nothing related i been inspecting all of the conectors and harness but cant find nothing broke or loose the only thing i have found is the throttle body sensor seems to have something loose inside when i removed to clean it but not sure if it suppose to be like that since idle seems to be fine
Thanks in advance just trying to get my car back in the road

Last edited by elcopeton1978; 10-03-2018 at 09:00 AM.
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Old 10-12-2018, 02:00 PM
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ajpasa
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Hi, I'm interested in this, being an automatic transmission's owner too.
Did you change anything prior to these codes? From fluid to any parts at all?

Br,
Al
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Old 10-14-2018, 07:31 PM
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elcopeton1978
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Hello Ajpasa
no i havent done anything with the car transmission other than a full tune up the codes come up all of the sudden and the transmission start getting into limp mode so i take my car to the transmission shop and they come up with the solution to replace the transmission valve body and while they were there, replace everything that seems to be worn out but the price was a little bit to much for me now $2950 with lifetime warranty and as i just bough the car my pockets are almost empty, so i talk to the guy and he agree to only replace the solenoid that was getting the code from but werent sure if it gonna work at all as he said in his experience mostly never work but is been almost 2 weeks since they did replace selenoid and transmission oil and filter and is been running good so far the cost was $320 all incluided
so my next step is to replace it with a used one in case it starts to fail again as i check the transmission valve body in nissan web site and cost around $1499 + tax
hope this helps some to you
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Old 10-15-2018, 11:59 AM
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ajpasa
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Thanks for the reply. Not a cheap fix indeed.
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