Where is the Transmission pressure sensor/switch located?

LONER84

MEMBER
2005 DODGE CARAVAN
2.4L
4 CYL
2WD
AUTOMATIC
124,500 MILES

Hello, I need help. I am trying to find the location of the transmission pressure switch for my vehicle listed above. I have been unable to find any information online. Thanks in advance!

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Tuesday, October 22nd, 2024 AT 5:15 PM

7 Replies

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi,

The PCM/TCM relies on three pressure switches to monitor fluid pressure in the L/R, 2/4, and OD hydraulic circuits. These components are integral to the solenoid/pressure switch. The pressure switches can only be serviced by replacing the assembly. (See pic below)

Let me know what codes you have so I can better pinpoint what you are dealing with.

Take care,

Joe

See pic below.

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Tuesday, October 22nd, 2024 AT 6:48 PM

LONER84

MEMBER
4 POSTS

The codes are P0700 and P0870. Thank you

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Wednesday, October 23rd, 2024 AT 7:29 PM

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi,

The P0700 is a generic code that simply indicates there is a code, or codes stored in the TCM. The P0870 is the one of concern and I do see why you indicated the pressure switch. However, there are several things that can be setting that code.

I attached the diagnostics for P0870 below. Take a look through them and let me know if you are comfortable performing them.

Let me know.

Joe

See pics below.

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Wednesday, October 23rd, 2024 AT 8:16 PM

LONER84

MEMBER
4 POSTS

I ended up changing fluid, input and output speeds sensors and solenoid. So far it is shifting fine and no lights. I am around 100 miles in since maintenance.

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Wednesday, December 4th, 2024 AT 7:47 AM

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Thanks for the update. I'm glad to know if is working properly now. Hopefully, it will continue.

Take care of yourself and feel free to come back anytime in the future. Also, if things change, let me know.

Joe