This fault code occurs when the Chassis Control Unit (CCU) fails to receive necessary messages from the GreenStar™ Display, part of John Deere’s Advanced Management System (AMS). This communication failure can affect the operator’s ability to monitor and control various aspects of the vehicle’s performance and settings.

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This fault code is triggered when the Chassis Control Unit (CCU) detects that the vehicle is engaged in a high-speed reverse gear (4R or 5R) while the rear Power Take-Off (PTO) is activated. This situation is typically prohibited to prevent mechanical stress and potential damage to the PTO system or to ensure operator safety by…

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This code is triggered when there is a discrepancy between the readings of the primary and secondary wheel speed sensors. Such mismatches can lead to inaccuracies in speedometer readings, vehicle stability controls, and other systems that rely on accurate wheel speed data.

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This fault code indicates that the voltage supplied to sensors is below the normal operational range, specifically dropping below 4.8 volts. This could be due to a failing battery, poor wiring, or issues within the vehicle’s charging system, leading to inadequate sensor performance and potential system malfunctions.

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This fault code arises when the voltage supplied to sensors is found to be above the normal operating range, specifically exceeding 5.2 volts. Such a condition may indicate an issue with the vehicle’s voltage regulator or electrical system, which can result in erratic sensor readings and potential sensor damage over time.

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This fault code occurs when the rear PTO switch is turned on while no operator is present in the seat, indicating a potential safety violation or malfunction in the operator presence detection system. This safety feature is designed to prevent the operation of potentially hazardous equipment without proper supervision.

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This fault code is issued when the hydraulic clean oil reservoir (COR) level switch detects a low oil level under specific conditions—specifically when the hydraulic oil temperature is low and the engine has been running for 2 to 10 seconds, depending on engine RPM. The low oil level indication often points to leakage from the…

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This code indicates a malfunction within the hydraulic clean oil reservoir (COR) level switch. The switch is essential for monitoring the oil level within the clean oil reservoir, ensuring that the hydraulic system has sufficient oil for safe and efficient operation. A faulty switch may either falsely report low oil levels or fail to alert…

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This fault code is triggered when the hydraulic oil level switch detects that the oil level in the clean oil reservoir is critically low, which could severely impact the hydraulic system’s performance and safety. The detection typically occurs under specific operating conditions where the hydraulic oil temperature is high, and the engine is running at…

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This fault code arises when the Chassis Control Unit (CCU) detects an output malfunction in the back up alarm circuit. This malfunction could affect the alarm’s ability to function correctly, potentially increasing the risk of accidents.

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This fault code indicates that the rear PTO needs calibration. Proper calibration is crucial for the PTO to operate efficiently and sync correctly with various implements and operational demands.

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