CLC 000158.00 – High Switched Supply Voltage in Cab Load Center. John Deere System Advisory.

CLC 000158.00 (CLC 158.00)

Code: 000158.00

Shortcode: 158.00


This error code indicates that the Cab Load Center (CLC) switched supply voltage exceeds 15.5 V while the engine speed is above 512 rpm. Elevated voltage levels can suggest issues such as a malfunctioning alternator or incorrect regulator settings, which may lead to potential damage to electronic components or erratic system behavior.


The system may limit or disable certain functions to prevent damage to sensitive electronic components due to high voltage.


  • Check Voltage Regulator and Alternator: Ensure that the alternator and voltage regulator are functioning correctly and are not overcharging the electrical system.
  • Inspect Wiring and Connections: Look for any damaged wires or loose connections that might be causing irregular voltage levels.
  • Monitor Voltage Levels: Regularly monitor the CLC voltage levels, especially under varying engine speeds, to ensure they remain within specified limits.
  • Consult Technical Support: If the above steps do not resolve the issue, it may be advisable to consult John Deere technical support for further diagnostics.


Maintaining proper voltage levels is critical for the safety and functionality of electronic systems in heavy machinery. Regular checks and maintenance can prevent issues associated with high voltage conditions.

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