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How do I find how to fix an electrical issue with the shifting of my transmission?

I can tell you what its not.. its not the transmission or components in it. I have already replaced the PCM. I am in process of replacing the air intake valve which appeared to be broke. The mechanic who swapped two different transmissions it and did some other testing and gave up.. told me that power comes into the trans relay switch for a couple of seconds then throws code and kills the power putting it into limp mode. I have gotten a 753 code 1765 but I do not have an updated code at this time but mechanic said the code 753 is same..

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  • Cars & Trucks Master
  • 2,963 Answers

Wild guess the relay mentioned is bad, or connections to it are bad. Connections must be clean, even scraped to bright metal.

Posted on Apr 01, 2015

Testimonial: "Thanks, we have switch out trans relay switch with new one.. nada..."

  • gbob59 Apr 03, 2015

    I googled: code 1765 you can add details, looks like a dodge cummings diesel. Some indication that the only code reader that sees it right is the dealers. You may find an answer in some of these messages.

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Not likely related to the battery dying. Have your transmission oil replaced as a start, this fixes a lot of transmission issues. If that doesn't work, have it checked by a transmission shop, could be anything from a switch to a transmission rebuild.

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I have a 2001 hyundai santa fe recently the car has stalled when shifting into gears, the engine light is on and the codes p0755 p0760 p0765, from my research on this site I was told that this could be an...


P0755 - Underdrive Solenoid Valve Circuit - Open or Short(GND
P0765 - Overdrive Solenoid Valve Circuit - Open or Short(GND
P0760 - Second Solenoid Valve Circuit - Open or Short(GND

Tell me, did the dealership inform you that your vehicle did NOT have an electrical problem? If they did, they lied!

Each of these trouble codes IDENTIFY an ELECTRICAL issue, whether it's in the wiring harness (outside or inside the transmission). Let's suppose the solenoids are 'ACTUALLY' bad, shorted/open - OK.... THEY CAN BE REPLACED!

Provided you have told me "all they did was pull up the codes and tell me I need a new transmission for $2175.00" is true - THEY LIED!

You can look up the repair procedure yourself on www.hmaservice.com and register your vehicle by VIN #. You then have access to shop manuals, service bulletins, wiring diagrams, etc. you can even type in the codes (Under Detail Search) and select the "Inspection/Repair" procedures and see what THEY DIDN'T do/tell you.

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I have a code P0753 p0763 p0758 how to solve the problem


P0753 Shift Solenoid A Electrical its inside of transmission not very easy to replace it controls the shifting of the transmission
P0763 Shift Solenoid C Electrical its another transmission shift solenoid
P0758 Shift Solenoid B Electrical another shift solenoid now my question to you is your transmission shifting normal have you had any work done to your car recently like changeing any seals on your transmission to have theses replaced by a mechanic its gonna be very expensive i could tell you step by step how to change them with theses codes you should be haveing serious shifting issues if you dont have shifting issues reset codes and see if they come back if they do then it could be in the wireing harness comeing from transmission hope this answers your question happy holidays

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If this is a new transmission exhibiting the same dysfunction as the old one then likely there is a problem with either the computer or perhaps the TPS. If the TPS is stuck electrically wide open then the transmission would always think it needed to be downshift. If the tps is good then the computer must be bad because the computer tells the transmission when to shift.

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