Understanding Freightliner Error Codes 

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As a Freightliner user, it may be difficult to interpret the error codes that appear when something goes wrong. It is important to understand what these codes mean so that you can take action and make sure your truck is running smoothly. In this blog post, we will discuss the different types of Freightliner Error Codes and how to read them. 

Types of Error Codes 

Freightliner trucks come equipped with two types of error codes: diagnostic codes and fault codes. Diagnostic codes are used to identify any potential problems in the engine or transmission systems. These codes help mechanics diagnose potential issues before they become major problems. Fault codes, on the other hand, indicate that a problem has already occurred and needs immediate attention. 

Reading Error Codes 

In order to read an error code, you will need access to the truck’s diagnostic system. This can be done by connecting a laptop computer or smartphone with diagnostic software installed on it directly to the truck’s computer system using either a USB cable or a Bluetooth connection. Once connected, simply enter the code into the diagnostic software and it will provide detailed information about what is causing the issue. If it is a fault code, you may also be able to reset it if the problem has been resolved. 

Common Causes of Error Codes 

There are several common causes of error codes in Freightliner trucks including faulty wiring, defective parts, low fuel pressure, or worn out brakes. It is important to note that these issues should not be treated as DIY tasks; instead they should be handled by experienced professionals who can properly diagnose and repair any underlying problems in order for your truck to run efficiently again.


Regardless of whether you are new to Freightliners or have been driving one for years, understanding what each type of error code means can go a long way towards keeping your vehicle running smoothly while avoiding costly repairs down the road. By familiarizing yourself with both diagnostic and fault codes along with their associated messages and solutions you will be able to quickly identify any potential issues before they become major problems. With this knowledge in hand, you’ll be able to better maintain your truck and get back on the road faster!

ritika sharma