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Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 2781
Experience:  ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician
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I have a code PO8 42 transmission pressure switch 1. Does

Customer Question

I have a code PO8 42 for low transmission pressure switch 1. Does this require a hydraulic check or do I need to drop the pan for an inspection.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Customer: replied 1 year ago.
I am in a remote location without a manual. Would appreciate any information you have. Urgent
Expert:  Jeremy replied 1 year ago.

My name is ***** ***** I will assist you.

What is the year, make, model of vehicle? Do you know what series transmission you have?

Depending on what the transmission is doing, most times the pressure needs to be checked. If the pressure is good, then of course the pan gets dropped and the sensor changed out.

Have you tried a filter change (if you have the spin on) to see if that gets rid of the issue you are having?

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Jeremy