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Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 3320
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 am working with a 2008 freightliner. I am getting a fault

Customer Question

Hello I am working with a 2008 freightliner. I am getting a fault code 128 155 0 SID. I cannot hook up with my labtop, using DDDL the latest version. I can hook up with a code reader but that is all. The regen light is popping up as well and I cannot do
a manual regen either.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Jeremy replied 1 year ago.

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

Turbocharger Compressor Inlet Differential Pressure Too High is the meaning of that code.

Is this a DD15 or a series 60? On either one, check the Delta P sensor and the EGR operation. One or the other is creating havoc.

If this is a smaller Freightliner with the Cummins engine, then the turbo actuator will be the fault for that code.

On the laptop not being able to connect, first make sure your license is good and the update is good on the laptop. Now that is ruled out, check the CAN BUS plug to see that you have no terminating resistor issues. Hand held scanners use 2 wires for comms where the DDDL program uses 4. You will have to unhook the batteries to get a correct reading on the truck. Most likely the terminating resistors are acting up on you and the laptop isn't communicating because of that.

You want a 5 star service and I want to provide a 5 star service. Please consider that I don't know your skill level as well as I can't see,
touch, smell, hear, or taste the vehicle/machine in question. Please provide as much detail as possible and I will provide as much back.

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Expert:  Jeremy replied 1 year ago.

I see you viewed this and this is still showing as a open question due to no positive (3 stars or more) rating.

Did you still need assistance with this?

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