03 Liberty 3.7 Transmission Line Pressure Sensor Location - at a loss

kgjl2006 · Tuesday at 3:58 PM

Hey all, I’ve been looking for the line pressure sensor/transmission fluid pressure sensor on my parents’ 03 Liberty 3.7 for quite some time and am at a loss for its location. I looked at a few service manuals which indicated it was on the rear passenger side of the transmission just above the fluid pan, but i looked around the entire pan and only found the speed sensors. For context, its throwing a 841 code.
Does anyone know where it could be?

ltd02 · Tuesday at 4:28 PM

What transmission do you have? I think some early 03s had the 45RFE and later went to the 42RLE.

ikuo78 · Tuesday at 7:41 PM

Is this it?
For 42, the pressure switch is attached to the valve body.
There is an exposed upward facing connector on the right side of the transmission, but it cannot be replaced from the outside.

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kgjl2006 · Tuesday at 8:18 PM

ikuo78 said:
Is this it?
For 42, the pressure switch is attached to the valve body.
There is an exposed upward facing connector on the right side of the transmission, but it cannot be replaced from the outside.

You must be registered for see images attach

Sorry for the delayed response, i had to go count the pan bolts. It should be the 42, but the sensor i have has a bolt hole so i dont know if it would fit there. Could also be the wrong part though. Here’s a pic of the new sensor. Thanks for the help so far!

ltd02 · Wednesday at 5:57 AM

That looks like the one for the 45RFE.

kgjl2006 · Thursday at 3:37 PM

ltd02 said:
That looks like the one for the 45RFE.

Gotcha, I’m gonna try changing the fluid and filter but if that doesn’t help, I’ll move forward with pulling the valve body. Thanks for all the help, i appreciate it!

03 Liberty 3.7 Transmission Line Pressure Sensor Location - at a loss

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