John Deere 005126.04: Sensor Supply Voltage Too Low

The sensor supply voltage is below the acceptable level, which may affect the operation of the DPF Pressure Differential Sensor, DOC/DPF Temperature Sensor, SCR Temperature Sensor, and DEF Pressure Sensor. This issue is detected by the ECU.

1. 1

   The power supply to the sensors

2. 2

   Wiring connections to the sensors

3. 3

   The ECU for proper operation

1. 1

   Inspect

   Inspect the wiring and connections to the sensors for damage, corrosion, or loose contacts.

2. 2

   Test

   Test the voltage supply to the sensors using a multimeter to confirm it is within the specified range.

3. 3

   Check

   Check the ECU for any fault indications or errors that may be affecting the sensor supply voltage.