New Holland 3790 – ENGINE: Diesel Particulate Filter: Signal Range Check Flow Resistance Exceeds Maximum

The Diesel Particulate Filter (DPF) has triggered a fault code indicating that the flow resistance of the filter has exceeded the maximum allowable range. This may indicate a blockage or excessive buildup within the DPF, affecting its ability to function properly.

1. 1

   The condition of the Diesel Particulate Filter

2. 2

   The flow resistance signal from the DPF

3. 3

   The integrity of the sensor or circuit associated with the DPF

1. 1

   Inspect the Diesel Particulate Filter

   Check for visible signs of blockage, damage, or excessive soot accumulation.

2. 2

   Verify the flow resistance signal

   Use diagnostic equipment to confirm the measured flow resistance value and compare it to the expected range.

3. 3

   Check the sensor or circuit

   Inspect the wiring and connections related to the DPF sensor to ensure they are intact and functioning correctly.