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I have a 545-146 fault code failure 12xs, Frieghtliner

Customer Question
I have a 545-146...

I have a 545-146 fault code failure 12xs

Mechanic's Assistant: What is the complete model and serial number of your machine?

Frieghtliner Columbia.. Don't serial number handy it's a mbe 4000 engine

Mechanic's Assistant: Are you fixing this yourself? What have you tried so far?

So far just trying to diagnose the codes.. Also have a sid 010

Mechanic's Assistant: Anything else you want the equipment mechanic to know before I connect you?

I did change both filters on the engine feul filters that is.. I'm not getting over 1500rpm

Submitted: 10 months ago.Category: Medium and Heavy Trucks
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Customer reply replied 10 months ago
This codes comes on and off.. Some times stays off for a while and than stays on full time until I cycle the key
Answered in 19 hours by:
9/21/2017
Technician: Daniel Wilson,
 replied 10 months ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,884
Experience: Owner at DJ Wilson
Verified

Hi my name is***** you still need help with this? 545 is actually SYS and 146.

SYS 146 SID 010 FMI 12 is front HVAC and FMI 12 is bad device or component...... an 010 is your blower motor. This fault points to a failed blower motor

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Technician: Daniel Wilson,
 replied 10 months ago

That fault would not cause your engine problems. Check the VSS speed sensor at the rear of the transmission and double check for both transmission and engine fault codes. Check for fuel restrictions and leaks as well an turbo boost pressure/air restrictions and leaks as well as turbo problems. Let me know

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Technician: Daniel Wilson,
 replied 10 months ago

We can follow up as needed on here.

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