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Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 2786
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 mack with a flash code 95 what am I looking for

Customer Question

I have a mack with a flash code 95 what am I looking for
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  cumminsdr replied 1 year ago.

What is the engine serial number

Customer: replied 1 year ago.

engine model AC-460E SERIAL 401844

Expert:  Jeremy replied 1 year ago.

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

The flash code 95 is for the Air compressor discharge temp sensor. However, it only narrow there. It could be the voltage too high, too low, or current low/open. Without having the truck hooked to a laptop with VMAC III, it is hard to be certain which one it is.

I would check for a ground in, vref of at least 5 volts, 9 volts, or 12 volts on the other pin and if you have one of the 3, replace the sensor. If you are missing one of the 3, then the harness needs to be chased. Most likely though the sensor itself is shot.

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Jeremy

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