TCU codes John Deere Error - John Deere News & Innovations: Equipment, Technology, Solutions

TCU codes

Comprehensive Guide to John Deere TCU Fault Codes and Diagnostic Trouble Codes

Understanding John Deere TCU fault codes is essential for maintaining the optimal performance of your equipment. These codes help identify specific issues within the Transmission Control Unit (TCU), allowing for timely and accurate troubleshooting. Below are some of the most common John Deere TCU diagnostic trouble codes, their meanings, and where they typically occur.

Common John Deere TCU Fault Codes

TCU 000126.00 – Dirty Transmission Oil Filter
- Description: This code is generated when dirt is detected in the transmission oil filter.
- Location: Transmission system.
- Impact: Can cause reduced transmission efficiency and potential overheating.
TCU 000127.01 – Transmission Oil Pressure Too Low
- Description: Indicates that the control unit does not register any transmission oil pressure.
- Location: Transmission system.
- Impact: May lead to improper transmission functioning and potential damage.
TCU 000161.00 – Transmission Input Speed Too High
- Description: Triggered when the transmission input speed exceeds the maximum RPM.
- Location: Engine and transmission interface.
- Impact: Can cause severe wear and tear on transmission components.
TCU 000177.00 – Transmission Oil Temperature Very High
- Description: This code is generated when the transmission oil temperature exceeds 100°C (212°F).
- Location: Transmission system.
- Impact: High oil temperature can lead to transmission failure and reduced lifespan.
TCU 600006.31 – Diagnostic Trouble Code Not Known
- Description: Indicates the presence of an unknown diagnostic trouble code received via CAN BUS.
- Location: CommandCenter (DTI).
- Impact: Can complicate diagnostics and troubleshooting processes.

Importance of Addressing John Deere TCU Error Codes

Timely addressing John Deere TCU error codes is crucial for the following reasons:

Prevents Further Damage: Early detection and resolution of TCU fault codes can prevent more significant issues and expensive repairs.
Ensures Optimal Performance: Keeping the transmission system in good condition ensures the overall efficiency and performance of the equipment.
Safety: Proper functioning of the transmission system is essential for the safe operation of John Deere machinery.

Regular monitoring and addressing of John Deere TCU diagnostic trouble codes is vital for the longevity and performance of your equipment. By understanding these common error codes and their implications, you can maintain your John Deere machinery more effectively, ensuring it operates smoothly and safely.

TCU 600006.31 – Diagnostic Trouble Code Not Known

John Deere TCU codes

This diagnostic trouble code (TCU 600006.31) is triggered by the CommandCenter (DTI) when the DTI receives a TCU diagnostic trouble code via the CAN BUS that is not stored in the DTI memory. This “general” diagnostic trouble code enables the…
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TCU 524233.08 – B62 Sensor for Hydrostatic Speed, Speed in Channel 1 Lower than in Channel 2

John Deere TCU codes

This diagnostic trouble code (TCU 524233.08) is generated if a difference in frequency is detected between the two sensor output signals for hydrostatic speed. This indicates that the speed in channel 1 is lower than in channel 2, suggesting a…
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TCU 524233.04 – B62 Hydrostatic Speed Sensor, Voltage in Channel 1 Too Low

John Deere TCU codes

This diagnostic trouble code (TCU 524233.04) is generated if the control unit detects that the voltage at the signal input from channel 1 of the hydrostatic speed sensor (B62, lead 6089) is too low. This indicates a short to ground…
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TCU 524233.03 – B62 Hydrostatic Speed Sensor, Voltage in Channel 1 Too High

John Deere TCU codes

This diagnostic trouble code (TCU 524233.03) is generated if the control unit detects that the voltage at the signal input from channel 1 of the hydrostatic speed sensor (B62, lead 6089) is too high. This indicates that the sensor’s circuit…
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TCU 524227.12 – Filter ByPass Valve (Coldweather Starting) is Opened by Mistake

John Deere TCU codes

This diagnostic trouble code (TCU 524227.12) is generated if the filter bypass valve (coldweather starting) is open while transmission input speed (engine speed) is above 1400 rpm and transmission oil temperature exceeds +30°C (86°F). If diagnostic trouble code TCU 000127.01…
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TCU 524227.07 – Filter ByPass Valve (Coldweather Starting) is Closed by Mistake

John Deere TCU codes

This diagnostic trouble code (TCU 524227.07) is generated if the filter bypass valve (for coldweather starting) is closed under the following conditions: Transmission input speed (engine speed) is over 1400 rpm and transmission oil temperature is below 5°C (23°F). Engine…
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TCU 524218.31 – Power Zero Signal is Transmitted by the UIC for Too Long

John Deere TCU codes

This diagnostic trouble code (TCU 524218.31) is generated when the control unit receives the power zero signal from the UIC via the CAN BUS for more than 5 minutes. This indicates a potential issue with the power zero signal transmission.
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TCU 524218.12 – Park Lock Engaged during Power Zero

John Deere TCU codes

This diagnostic trouble code (TCU 524218.12) is generated if the control unit detects that the park lock is engaged, even though Power Zero is commanded by the UIC control unit at the same time.
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TCU 524183.19 – Incorrect CAN BUS Message, Change of Direction of Travel from UIC

John Deere TCU codes

This diagnostic trouble code (TCU 524183.19) is generated if the UIC control unit is not able to determine the value for changing direction of travel (PSS) and so cannot provide the CAN BUS with any relevant data. A transmitted replacement…
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TCU 524182.19 – Incorrect CAN BUS Message, Transmission Shift Monitor from UIC

John Deere TCU codes

This diagnostic trouble code (TCU 524182.19) is generated if the UIC control unit is not able to determine the value of the transmission shift monitor (RSL) and so cannot provide the CAN BUS with any relevant data. A transmitted replacement…
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TCU 524181.19 – Incorrect CAN BUS Message, Desired Acceleration from UIC

John Deere TCU codes

This diagnostic trouble code (TCU 524181.19) is generated if the UIC control unit is not able to determine the desired acceleration value (DTOAPR) when changing the direction of travel and so cannot provide the CAN BUS with any relevant data.…
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John Deere News & Innovations: Equipment, Technology, Solutions

TCU codes

Comprehensive Guide to John Deere TCU Fault Codes and Diagnostic Trouble Codes

Common John Deere TCU Fault Codes

Importance of Addressing John Deere TCU Error Codes

TCU 600006.31 – Diagnostic Trouble Code Not Known

TCU 524233.08 – B62 Sensor for Hydrostatic Speed, Speed in Channel 1 Lower than in Channel 2

TCU 524233.04 – B62 Hydrostatic Speed Sensor, Voltage in Channel 1 Too Low

TCU 524233.03 – B62 Hydrostatic Speed Sensor, Voltage in Channel 1 Too High

TCU 524227.12 – Filter ByPass Valve (Coldweather Starting) is Opened by Mistake

TCU 524227.07 – Filter ByPass Valve (Coldweather Starting) is Closed by Mistake

TCU 524218.31 – Power Zero Signal is Transmitted by the UIC for Too Long

TCU 524218.12 – Park Lock Engaged during Power Zero

TCU 524183.19 – Incorrect CAN BUS Message, Change of Direction of Travel from UIC

TCU 524182.19 – Incorrect CAN BUS Message, Transmission Shift Monitor from UIC

TCU 524181.19 – Incorrect CAN BUS Message, Desired Acceleration from UIC

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