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George H.
George H., ASE Certified Technician
Category: Jeep
Satisfied Customers: 17487
Experience:  ASE Master Tech 15+ years
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where is oil pressure sensor on 2003 jeep liberty 3.7

Customer Question

where is oil pressure sensor on 2003 jeep liberty 3.7
Submitted: 3 years ago.
Category: Jeep
Expert:  George H. replied 3 years ago.

Hello I will help you with your question,


The OP sensor is just above the oil filter as shown in the diagram below


Click here for diagram


Look this over and let me know how I can help you


If you would like any additional information or have more questions please don't hesitate to ask!

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Thank you

Customer: replied 3 years ago.
I have alreddy located that one with one (1) terminal, appearently there is anoder one with three (3) terminals accrding to parts catalogue
Expert:  George H. replied 3 years ago.

I am not sure where you are seeing this but the switch I posted runs to the engine control module.


This is a gasoline/petrol engine or it is diesel?



Customer: replied 3 years ago.

It's a gasoline/petrol engine.

Problem is,the op light stays on and i had the switch replaced.scanner read:

Op sensor/switch circuit hight input.

Expert:  George H. replied 3 years ago.

This is the correct switch, if you unplug it do you get the same code?


The switch runs to the computer which tells the instrument cluster to turn the light on so you may have a pinched wire or a faulty computer. Try unplugging the switch completely then lets check at the computer to see if the switch wire is grounded.


Let me know how much help you need with this


Thank you



George H., ASE Certified Technician
Category: Jeep
Satisfied Customers: 17487
Experience: ASE Master Tech 15+ years
George H. and other Jeep Specialists are ready to help you
Expert:  George H. replied 3 years ago.

The oil pressure is indicated low if the green/yellow wire is disconnected from ground and is indicated high if the wire is grounded.


Either you have high oil pressure or the wire is grounded or the computer is failing.


What oil is installed in the engine? Is it 5W-30 weight?. Is the filter correct?


Have you checked the oil pressure with a mechanical gauge? If it is within spec (4 psi at idle and 25 - 80 psi running depending on RPM) then check that the wire is not grounded and then the computer would have to be replaced if the wire is disconnected from the computer yet the reading is still high.


Let me know how I can help


Thank you



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