2015 CAT 299D2 XHP Code E695-3 Troubleshooting

[MikePhua]

A user on the Panswork forum encountered an issue with a 2015 CAT 299D2 XHP skid steer that triggered the error code E695-3. This code points to a specific issue with the hydraulic system and the vehicle’s electronic control system. The problem affects the machine's performance, particularly with hydraulic function, and causes a disruption in normal operation.
Error Code E695-3 Explanation:
The E695-3 code typically refers to a hydraulic system fault or communication issue between the machine’s control system and the hydraulic pump. This could indicate either a problem with the electronic sensor, faulty wiring, or an issue with the hydraulic pump or system pressure.
Possible Causes for the E695-3 Code:

1. Hydraulic System Pressure Issues:
   The hydraulic pressure may be too high or too low, preventing the proper operation of the pump or other hydraulic components. This can trigger an error code in the system and reduce overall performance.
   
2. Faulty Sensors or Wiring:
   A malfunctioning sensor or damaged wiring can lead to poor communication between the machine’s computer and the hydraulic system. Inaccurate sensor readings or interrupted signals could cause the machine to display the E695-3 error.
   
3. Pump or Valve Malfunction:
   The hydraulic pump or control valve might be experiencing issues. This could include wear, internal damage, or contamination that leads to a drop in pressure or failure in hydraulic functions.
   

Troubleshooting Steps:

1. Check Hydraulic Fluid Levels:
   Ensure that the hydraulic fluid is at the correct level and is free from contamination. Low fluid levels or dirty fluid can cause issues with the hydraulic pump, which might trigger the E695-3 code.
   
2. Inspect the Hydraulic Pressure:
   Use a pressure gauge to check the hydraulic pressure levels. Verify that the pressure matches the manufacturer’s specifications. If the pressure is off, it could be a sign of a problem with the pump, pressure relief valve, or a blockage in the lines.
   
3. Examine the Sensors and Wiring:
   Inspect the hydraulic sensors and wiring for any signs of wear, corrosion, or damage. A faulty sensor could send inaccurate signals to the system, leading to error codes. If any sensors appear damaged, replace them to restore proper functionality.
   
4. Check the Hydraulic Pump:
   If the sensors and wiring are intact, the next step is to check the hydraulic pump. Ensure that the pump is functioning properly and not suffering from issues such as cavitation or loss of pressure. A malfunctioning pump should be replaced or repaired as needed.
   
5. Clear the Error Code:
   After addressing the problem, use the machine's diagnostic tool or reset procedure to clear the error code. If the issue is resolved, the machine should return to normal operation.
   

Preventative Measures:

1. Regular Hydraulic System Maintenance:
   To prevent future issues, ensure that the hydraulic fluid is replaced and filters are cleaned or replaced regularly. Maintaining the hydraulic system and ensuring that all components are in good working order can help avoid sensor or pressure problems.
   
2. Check Electrical Connections:
   Make sure that the electrical connections, including those for the sensors and controllers, are secure and free from corrosion. Proper electrical maintenance can help prevent communication errors that could trigger codes like E695-3.
   
3. Use Genuine Parts:
   When replacing any hydraulic or electronic components, use parts recommended by the manufacturer to ensure compatibility and optimal performance. Non-genuine parts can sometimes cause issues or fail prematurely.
   

Conclusion:
The E695-3 error code on the 2015 CAT 299D2 XHP is typically related to issues within the hydraulic system or its electronic controls. By carefully inspecting the hydraulic fluid, pressure levels, sensors, wiring, and pump, you can identify the root cause of the problem. Regular maintenance and careful attention to the system’s components can help prevent such issues from arising and ensure the skid steer continues to operate smoothly and efficiently.