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I have a 2015 VNL 780 D16 Haulmark motorhome and I am

I have a 2015...

I have a 2015 VNL 780 D16 Haulmark motorhome and I am getting a SA 16 DTC P255800 ECM error code and i can not find out what that means. I looked at the DTC code list and it is not there. Can you please tell me what it means and how to repair?

Mechanic's Assistant: I'll do all I can to help. Can you tell me more about what's going on?

I bought and drove the truck from Florida to Pennsylvania. It had a SA 16 DTC P255613 error code listed as the only fault. I got home a determined the coolant level sensor was bad and replaced it. That got rid of the DTC P255613 code but then the DTC P 255800 error code came up. I cannot determine what that code means.

Mechanic's Assistant: Which particular sensor are you asking about? And have any trouble codes been triggered?

I don't know what sensor I am asking about because I do not know what the DTC P255800 error code means. Can you tell me what the DTC P255800 error code is?

Mechanic's Assistant: What is the make/model of your '15 car?

It is not a car it is a VNL Volvo semi truck.

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

I have tried to find out what the DTC P255800 error code on the dashboard screen means and that is what I am attempting to do now at Volvo Tech Support.

Mechanic's Assistant: Is there anything else the Mechanic should know before I connect you? Rest assured that they'll be able to help you.

No, I just need to know what that error code is or means.

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Answered in 1 hour by:
5/11/2021
Technician: Mike Mcmillan, Shop Foreman/Triage Tech replied 1 year ago
Mike Mcmillan
Mike Mcmillan, Shop Foreman/Triage Tech
Category: Medium and Heavy Trucks
Satisfied Customers: 6,454
Experience: Volvo/Mack Master Tech, Certified with Cummins, Eaton, GM, Hino, Detroit Diesel
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Technician: Mike Mcmillan, Shop Foreman/Triage Tech replied 1 year ago

On your question, that fault code is a coolant temp sensor fault code. The reason why it is not in the updated fault code manuals is because the fault was eliminated via engine software updates. This fault will not cause any performance effects on the engine and a software update repairs the issue the majority of the time. On some occasions a temp sensor has to be replaced. I hope this helps you with your question.

Mike Mcmillan
Mike Mcmillan, Shop Foreman/Triage Tech
Category: Medium and Heavy Trucks
Satisfied Customers: 6,454
Experience: Volvo/Mack Master Tech, Certified with Cummins, Eaton, GM, Hino, Detroit Diesel
Verified
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