DTI 523774.03 – Vehicle CAN Bus Overvoltage Warning (CAN)

DTI 523774.03 (DTI )

Code: 523774.03



This diagnostic trouble code (DTC) is issued when the CAN voltage in the vehicle’s CAN Bus system exceeds 5.0 volts. Such an overvoltage condition can interfere with the integrity of data being transmitted over the network, leading to a halt in data communication to prevent potential damage or errors.


The system may disable data transmission on the CAN Bus to avoid damage to electronic components and data integrity issues.


  • Evaluate Electrical Components: Identify and rectify any component failures or system malfunctions that may be causing high voltage.
  • Monitor Voltage Levels: Continuously monitor the voltage levels to ensure they remain within specified limits and adjust system settings as needed.
  • Install or Check Voltage Regulators: Verify the operation of voltage regulators designed to maintain stable voltage levels within the electrical system.


Proper voltage regulation on the CAN Bus is crucial for preventing overvoltage incidents that can disrupt system communications and damage sensitive electronics. Regular system checks and voltage monitoring are vital.

Control Units: John Deere

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