What have you done to repair the fault that shows the codes?
from your statement you are removing the codes and resetting the ECM but the codes come back and the vehicle goes back into limp mode
one of the codes (p 0734 --0?) refers to gear 4--incorrect ratio===causes --wiring---TR sensor /switch ---shift solenoids---transmission mechanical fault
If that fault area is not fixed then the TCM doesn't know what gear to select so it goes to limp mode
SOURCE: automatic transmission is stuck in 2nd gear (limp mode)
most newer vehicles have transmission control modules,that go to a default of 2nd or 3rd gear when they go bad! I had a 91 plymouth stuck in 3rd gear because of this module! could be your problem! when mine went out, it smelled like something electrical burned inside the the passenger cabin! I would check all the electrical connections on the transmission first good luck
SOURCE: 99 jaguar transmission code p1722
This code is an indication that the transmission has excessive slippage, the code is for the input and output turbine speed sensors, based on what i know of this problem the trans has a mechanical problem, that would be low fluid pressure or worn out forward clutches, make sure the trans fluid is not low, if it is ok you will need to have the trans torn down for inspection..
SOURCE: 01 duramax allison changed fluid and filters now in limp mode
Make sure you have the proper amount of tranny fluild in it and get that Valvoline fluid out of it. Allison transmissons have there own type of tranny fluid and you want to use it. You can buy the right stuff from a Allison dealer. Most Detroit Diesel dealers are also Allison dealers. Look them up in your phone book and they will tell you the quanity and sell you five gallon pails of the fluid. Just get the serial number off of the side of the transmisson before you call. Change the fliters again too. Believe me, this is important. My company has Yard horses with Allison transmissions and you don't want to screw with the small stuff. Service them right and they work as hard as you want.
SOURCE: My 95 Nissan Maxima won't shift out of park into
MOST LIKELY THIS IS A BTSI SOLENOID(BRAKE/TRANSMISSION SHIFT INTERLOCK)
SOURCE: replace transmission in 2005 nissan maxima
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