This diagnostic trouble code indicates that the supply voltage (BAT) is below 9 volts. Adequate battery voltage is essential for the proper operation of the control software and the vehicle’s electrical systems.
- John Deere error ECU codes
This diagnostic trouble code indicates a fault in the circuit for powering down the control unit. The Engine Control Unit (ECU) sends a request to the Cab Control Unit to keep the voltage supply alive to allow for proper power down. This request was not complied with, indicating a potential issue with the battery connection…
- John Deere error ECU codes
This diagnostic trouble code indicates that the ECU detected low resistance in the power supply output 3 circuit, which is lower than the sensor low voltage specification. Low resistance in this circuit typically suggests a short to ground, which can affect the proper functioning of the ECU and connected components.
- John Deere error ECU codes
This diagnostic trouble code indicates that the ECU detected low resistance in the power supply output 2 circuit, which is lower than the sensor low voltage specification. Low resistance in this circuit typically suggests a short to ground, which can affect the proper functioning of the ECU and connected components.
- John Deere error ECU codes
This diagnostic trouble code indicates that the ECU detected low resistance in the power supply output 1 circuit, which is lower than the sensor low voltage specification. Low resistance in this circuit typically suggests a short to ground, which can affect the proper functioning of the ECU and connected components.


