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CCU codes

John Deere CCU Fault Codes / CCU Diagnostic Trouble Codes

Welcome to the comprehensive archive of John Deere CCU fault codes and CCU diagnostic trouble codes. Here, you will find detailed information and troubleshooting guides for issues related to the Chassis Control Unit (CCU) and Vehicle Load Center (VLC) Control Unit in your John Deere machinery. Understanding and resolving these error codes is crucial for maintaining the performance, safety, and reliability of your equipment.

Overview of John Deere CCU and VLC Control Units

The Chassis Control Unit (CCU) and Vehicle Load Center (VLC) share a common control unit flex box, known as the Vehicle Control Unit (VCU). These units are integral to both PowerShift Transmission (PST) and AutoPowr™ / IVT™ systems. The CCU plays a vital role in controlling, monitoring, and protecting various functions across the chassis, drivetrain, hydraulic systems, and engine.

Key Functions Managed by the CCU:

Chassis Functions: Includes fuel level monitoring, iTEC™ controls, and alarm systems.
Drive Train Functions: Manages differential lock and rear PTO operations.
Hydraulic Functions: Oversees hydraulic oil filter restriction, oil temperature, and oil pressure.
Engine Functions: Monitors air filter restriction to ensure optimal engine performance.

Common John Deere CCU Fault Codes

CCU 000100.01 – Engine Oil Pressure Signal Extremely Low
- Description: Indicates critically low engine oil pressure, risking severe engine damage.
- Solution: Check oil levels, inspect the oil pressure sensor, and ensure the oil pump is functioning properly.
CCU 000100.04 – Engine Oil Pressure Signal Out of Range Low
- Description: Signifies low oil pressure, affecting safe engine operation.
- Solution: Verify oil levels, inspect the sensor and wiring, and test oil pressure.
CCU 000110.03 – Engine Coolant Temperature Signal Out of Range High
- Description: Engine is overheating, risking severe damage.
- Solution: Check coolant levels, inspect the cooling system, and ensure the thermostat is working.
CCU 000110.04 – Engine Coolant Temperature Signal Out of Range Low
- Description: Engine coolant temperature is too low, affecting efficiency.
- Solution: Ensure proper coolant levels, check the temperature sensor, and verify thermostat operation.
CCU 000110.16 – Engine Coolant Temperature Signal Moderately High
- Description: Indicates the engine is running hotter than normal.
- Solution: Inspect cooling system components and monitor engine temperature closely.

Diagnosing and Resolving CCU Error Codes

Understanding John Deere CCU fault codes and diagnostic trouble codes is essential for timely and effective troubleshooting. Each error code provides specific information about the nature of the fault and the affected system. Here are some general steps for diagnosing and resolving these codes:

Identify the Error Code: Use diagnostic tools to read the specific fault code displayed by the CCU.
Consult the Manual: Refer to the John Deere technical manual for detailed descriptions and troubleshooting steps for each code.
Inspect Relevant Components: Based on the fault code, inspect the associated sensors, wiring, and mechanical parts.
Perform Necessary Repairs: Replace or repair any faulty components identified during inspection.
Reset the Control Unit: After addressing the issue, reset the CCU and verify that the fault code is cleared.

Importance of Regular Maintenance

Regular maintenance and proactive inspection of your John Deere machinery can prevent many of the issues signaled by CCU fault codes. Keeping an eye on fluid levels, ensuring proper operation of sensors and control units, and addressing minor issues before they escalate are key practices for maintaining optimal equipment performance.

John Deere CCU fault codes and diagnostic trouble codes are critical for identifying and resolving issues within the chassis control unit and related systems. By understanding these codes and following proper troubleshooting procedures, you can ensure the safety, efficiency, and longevity of your John Deere machinery. For more detailed information and specific troubleshooting steps, refer to the John Deere technical manuals and consult with authorized service professionals.

CCU 000110.16 – Engine Coolant Temperature Signal Moderately High

John Deere CCU codes

This fault code indicates that the engine coolant temperature is moderately high, suggesting that the engine is running hotter than normal but not yet at a critical level. This condition may lead to reduced engine efficiency and potential long-term damage…
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CCU 000110.04 – Engine Coolant Temperature Signal Out of Range Low

John Deere CCU codes

This fault code is triggered when the Chassis Control Unit (CCU) detects that the engine coolant temperature signal is lower than the normal operating range. This condition indicates that the engine may not be reaching optimal operating temperature.
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CCU 000110.03 – Engine Coolant Temperature Signal Out of Range High

John Deere CCU codes

This fault code indicates that the Chassis Control Unit (CCU) has detected that the engine coolant temperature signal is higher than the normal operating range. This condition suggests that the engine is overheating, which can lead to severe engine damage.
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CCU 000100.04 – Engine Oil Pressure Signal Out of Range Low

John Deere CCU codes

This fault code is triggered when the Chassis Control Unit (CCU) detects that the engine oil pressure signal is lower than the normal operating range. This condition indicates that the oil pressure is insufficient for safe engine operation.
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CCU 000100.01 – Engine Oil Pressure Signal Extremely Low

John Deere CCU codes

This fault code indicates that the Chassis Control Unit (CCU) has detected an extremely low signal from the engine oil pressure sensor. This condition suggests that the engine oil pressure is critically low, which can lead to severe engine damage…
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CCU 600006.31 – Default DTC

John Deere CCU codes

This default diagnostic trouble code (DTC) is triggered when a solenoid is commanded on, and the return voltage is outside the expected range (less than 0.75 V or greater than 2.00 V) for more than 2 seconds. This condition indicates…
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CCU 524255.31 – Rear PTO Remote Switch Enabled (Rear Remote PTO Enabled)

John Deere CCU codes

This fault code indicates that the Chassis Control Unit (CCU) detects the rear PTO external switch function is being requested while the rear PTO switch is off. This serves as a safety alert to indicate that the CCU is ready…
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CCU 524252.05 – Rear PTO Solenoid Circuit Fault

John Deere CCU codes

This fault code is triggered when the Chassis Control Unit (CCU) detects a malfunction in the rear PTO solenoid driver or circuit. The issue can be due to an open circuit, short circuit, or an over-temperature condition. The fault is…
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CCU 524251.31 – Operator Not Present With Rear PTO On

John Deere CCU codes

This fault code is triggered when the Chassis Control Unit (CCU) detects that the rear PTO is engaged while the operator is not present in the seat or if the operator leaves the seat while the PTO is engaged. This…
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CCU 524236.31 – MFWD Switch/ iTEC™ Conflict

John Deere CCU codes

This fault code occurs when there is a conflict between the MFWD switch command and the command from the Intelligent Total Equipment Control (iTEC™) system. Specifically, it is detected when iTEC™ is turned off while commanding MFWD, resulting in a…
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CCU 524235.05 – MFWD Solenoid Circuit Fault

John Deere CCU codes

This fault code indicates that the Chassis Control Unit (CCU) has detected a malfunction in the Mechanical Front-Wheel Drive (MFWD) solenoid driver or circuit. This can occur due to an open circuit, a short circuit, or an over-temperature condition. The…
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The Latest John Deere News and Trends

CCU codes

John Deere CCU Fault Codes / CCU Diagnostic Trouble Codes

Overview of John Deere CCU and VLC Control Units

Key Functions Managed by the CCU:

Common John Deere CCU Fault Codes

Diagnosing and Resolving CCU Error Codes

Importance of Regular Maintenance

CCU 000110.16 – Engine Coolant Temperature Signal Moderately High

CCU 000110.04 – Engine Coolant Temperature Signal Out of Range Low

CCU 000110.03 – Engine Coolant Temperature Signal Out of Range High

CCU 000100.04 – Engine Oil Pressure Signal Out of Range Low

CCU 000100.01 – Engine Oil Pressure Signal Extremely Low

CCU 600006.31 – Default DTC

CCU 524255.31 – Rear PTO Remote Switch Enabled (Rear Remote PTO Enabled)

CCU 524252.05 – Rear PTO Solenoid Circuit Fault

CCU 524251.31 – Operator Not Present With Rear PTO On

CCU 524236.31 – MFWD Switch/ iTEC™ Conflict

CCU 524235.05 – MFWD Solenoid Circuit Fault

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