John Deere 004795.31: Pressure Signal From The DPF Pressure Differential Sensor Missing Or Out Of Range

The Engine Control Unit (ECU) is not receiving a valid pressure signal from the DPF Pressure Differential Sensor, or the signal is outside the expected range. This may affect the proper operation of the diesel particulate filter system.

1. 1

   The connection and wiring of the DPF Pressure Differential Sensor

2. 2

   The integrity of the signal being sent from the DPF Pressure Differential Sensor to the ECU

3. 3

   The functionality of the DPF Pressure Differential Sensor itself

1. 1

   Inspect

   Inspect the wiring and connections of the DPF Pressure Differential Sensor for damage, corrosion, or loose contacts.

2. 2

   Test

   Test the DPF Pressure Differential Sensor to verify it is generating a valid signal within the expected range.

3. 3

   Replace

   If the sensor is faulty, replace it with a compatible component.