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George H.
George H., Subaru Certified Technician
Category: Subaru
Satisfied Customers: 18817
Experience:  ASE Master Tech 15 + Years
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Just pulled the engine on a 2000 legacy out back did head

Customer Question

just pulled the engine on a 2000 legacy out back did head gaskets and a reseal , installed the engine now the at temp light blinks . i checked the resistance on the drop resistor seems good code 75 came up
JA: Is this your first time dealing with this issue? What size is your engine?
Customer: 2.5 liter and yes first time allthough ive pulled many suburu engines out and in
JA: Are you fixing your Legacy yourself? What have you tried so far?
Customer: tried checking all the grounds and plug ins ther ok there was a strap from frame to bracket that he forgot at first
JA: Anything else you want the mechanic to know before I connect you?
Customer: i think thats it
Submitted: 1 year ago.
Category: Subaru
Expert:  George H. replied 1 year ago.

Hello I will help,

The code 75 is for the resistor or the line pressure solenoid in the transmission. How did you support the transmission to pull the engine?

Customer: replied 1 year ago.
prolly on jack
Customer: replied 1 year ago.
i saw he had a jack underneath
Expert:  George H. replied 1 year ago.

OK, then that is probably what happened. The pan is less than 1/4 inch from the valve body and if you put a jack under it with any weight the pan will flex and damage the temp sensor or the harness.

Do you have the full test procedure so you can open the large connector and ohm though the solenoid? If it tests shorted to ground you need to pull the pan and repair the harness. Let me know if you need the full test procedure or if you have it.


Customer: replied 1 year ago.
i dont have the procedure i would appreciate it
Expert:  George H. replied 1 year ago.

Click here for procedure

It is large so just go through step by step to see the part where you open the connector and ohm check through the solenoid

Let me know if that opens for you then choose to save it so you have a local copy

Customer: replied 1 year ago.
far nothing came through
Customer: replied 1 year ago.
fax number is(###) ###-####if that helps
Expert:  George H. replied 1 year ago.

You will have to allow the download, if you have a blocking program then you have to stop it. I can't fax, this is a .pdf in a Dropbox file so you should be able to download it to your computer.

Customer: replied 1 year ago.
can you email to***@******.***
Customer: replied 1 year ago.
i cant see where it is supposed to down load
Customer: replied 1 year ago.
sorry for the trouble
Expert:  George H. replied 1 year ago.

I am sorry but I can't

What do you see when you click the link I posted above?

Are you on a real computer?

Click here for a second link

I want to help you get this info, it is part 8N7 that has the test you need. Let me know what you see, what type of computer and if you have a popup blocker or ad blocker running.


Customer: replied 1 year ago.
i just got it thanks let me test
Expert:  George H. replied 1 year ago.

Great!, see what you can find and please let me know if you have further questions


Customer: replied 1 year ago.
the selenoid is busted what do they call that the line pressure selenoid
Expert:  George H. replied 1 year ago.

That is the pressure regulating solenoid or line pressure solenoid. "C" in the diagram

Click here for diagram