Troubleshooting Bobcat S250 Error Codes: A Guide for Operators and Technicians

[MikePhua]

Introduction: Understanding Error Codes in Bobcat S250 Skid Steers
The Bobcat S250 skid steer loader is a versatile and reliable machine, popular in the construction, landscaping, and agricultural industries. Like all complex machinery, it comes equipped with an onboard diagnostic system that monitors the health of the machine and alerts the operator to any potential issues through error codes. These error codes can point to a variety of problems, ranging from minor to major malfunctions. For operators and technicians, understanding how to read and troubleshoot these codes is essential for keeping the machine running smoothly.
In this article, we will explore common error codes that may appear on the Bobcat S250, their potential causes, and tips for diagnosing and fixing these issues. We'll also provide insights into Bobcat's diagnostic system and offer advice on how to prevent future problems.
The Bobcat S250 and its Diagnostic System
The Bobcat S250 is equipped with a sophisticated diagnostic system that constantly monitors various components, including the engine, hydraulic system, electrical components, and fuel systems. When an issue is detected, the system triggers an error code that can be accessed via the machine's operator interface panel or through a scan tool connected to the machine's diagnostic port.
These error codes can indicate anything from sensor malfunctions and hydraulic issues to electrical problems. Understanding these codes is the first step toward proper troubleshooting and resolution.
Common Bobcat S250 Error Codes and Troubleshooting Steps
Here are some of the most common error codes that might appear on the Bobcat S250, along with their possible causes and troubleshooting solutions:
1. Error Code: E-11 or E-12 – Low Battery Voltage
This error code typically appears when the machine's battery voltage falls below the acceptable threshold. It may be caused by a weak battery, loose connections, or faulty alternator.
Possible Solutions:

• Check the battery voltage and charge if necessary.
  
• Inspect the battery terminals for corrosion and ensure they are properly tightened.
  
• Test the alternator to ensure it is charging the battery properly.
  
• If the battery is old, consider replacing it.
  

2. Error Code: E-15 – Fuel Pressure Issue
This error is often related to a fuel delivery problem, such as a clogged fuel filter, a malfunctioning fuel pump, or an issue with the fuel pressure regulator. It can prevent the engine from receiving enough fuel, causing a lack of power or stalling.
Possible Solutions:

• Inspect the fuel filter and replace it if clogged.
  
• Test the fuel pump and fuel pressure regulator for proper function.
  
• Check fuel lines for blockages or leaks.
  
• Ensure the fuel tank is not contaminated with debris or water.
  

3. Error Code: E-19 – Hydraulic Pressure Low
An E-19 code indicates that the hydraulic pressure in the system is too low, which could be caused by a range of issues, including a low hydraulic fluid level, a worn pump, or a hydraulic leak.
Possible Solutions:

• Check the hydraulic fluid level and top up if necessary.
  
• Inspect hydraulic hoses and fittings for leaks.
  
• Test the hydraulic pump and replace it if it is malfunctioning.
  
• Ensure the hydraulic filter is clean and free of blockages.
  

4. Error Code: E-21 – Engine Coolant Temperature Too High
This error code appears when the engine’s coolant temperature exceeds the normal operating range, potentially causing engine overheating. Common causes include a malfunctioning thermostat, coolant leak, or a clogged radiator.
Possible Solutions:

• Check the coolant level and top it up if needed.
  
• Inspect the radiator for blockages or debris.
  
• Test the thermostat for proper operation.
  
• Check for any leaks in the cooling system and repair them.
  

5. Error Code: E-26 – Engine Overload
This error code typically occurs when the engine is under too much load for a sustained period, such as during heavy lifting or pushing tasks. It may also indicate an issue with the engine’s electrical system or fuel delivery system.
Possible Solutions:

• Reduce the load on the machine and let the engine cool down.
  
• Check the fuel system for clogs or restrictions.
  
• Inspect the air filter to ensure proper airflow to the engine.
  
• Ensure the machine is not being operated beyond its rated capacity.
  

General Troubleshooting Tips for Bobcat S250 Error Codes
While specific error codes will require tailored troubleshooting, here are some general tips that can help resolve common issues with the Bobcat S250:
1. Resetting the Error Code:
Before diving into repairs, sometimes simply resetting the error code can help determine if the issue is temporary. To reset the error code, turn off the machine, wait a few minutes, and then restart it. If the code reappears, further investigation will be needed.
2. Use a Bobcat Diagnostic Scan Tool:
For more advanced issues, a Bobcat diagnostic scan tool can be connected to the machine to provide deeper insights into the error codes. This tool can read additional codes that may not be visible on the operator panel and provide a more accurate diagnosis.
3. Consult the Service Manual:
Always refer to the Bobcat S250 service manual for specific error code descriptions, troubleshooting procedures, and diagrams. This manual will provide important details on component locations, part numbers, and repair steps.
4. Check for Software Updates:
In some cases, error codes may be related to outdated software or firmware on the machine's diagnostic system. Check for software updates or contact Bobcat support to ensure the system is running the latest version.
5. Perform Regular Maintenance:
Preventive maintenance is key to avoiding error codes in the first place. Regularly check fluid levels, inspect hoses and filters, and clean the machine to ensure optimal performance. Routine maintenance can help extend the life of your Bobcat S250 and reduce the likelihood of encountering error codes.
Preventive Measures to Avoid Future Issues
While troubleshooting and resolving error codes is part of owning any heavy machinery, taking steps to prevent future issues is equally important. Here are some tips for keeping your Bobcat S250 in good working condition:

• Follow the maintenance schedule outlined in the owner’s manual, and perform regular checks on critical components such as oil, fuel, and hydraulic fluid.
  
• Clean the machine regularly to prevent dirt, debris, and moisture from entering sensitive areas such as the engine, hydraulic system, and electrical components.
  
• Keep a log of error codes and maintenance actions. This log can help you track recurring issues and spot trends that may indicate larger underlying problems.
  
• Invest in high-quality parts when performing repairs or replacements. Using genuine Bobcat parts ensures compatibility and longevity.
  
• Train operators properly to ensure they are using the machine within its limits. Overloading or improper use can lead to system stress and premature failure.
  

Conclusion: Understanding and Resolving Error Codes for the Bobcat S250
The Bobcat S250 is a powerful and reliable skid steer, but like all machinery, it requires proper care and maintenance. Understanding how to interpret and troubleshoot error codes is essential for operators and technicians to keep the machine running efficiently.
By addressing common issues such as battery voltage problems, hydraulic pressure drops, and engine overloads, operators can minimize downtime and avoid costly repairs. Regular maintenance and attention to the machine’s diagnostic system can prevent many of these problems from arising in the first place.
With the right knowledge and tools, troubleshooting error codes on the Bobcat S250 can become a straightforward task, allowing operators to focus on getting the job done.