John Deere 3720.16 – ECU: Calculated Ash Level Moderately High

The Engine Control Unit has calculated that the ash accumulation in the Diesel Particulate Filter (DPF) has reached a moderately high level, reducing the filter's soot storage capacity and increasing exhaust back pressure.

• 5085E
• 5090E
• 5090EL
• 5100E
• 5085M
• 5100M
• 5100MH
• 5100ML
• 5115ML
• 5090M
• 5115M
• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 7210R
• 7230R
• 7250R
• 7270R
• 7290R
• 7310R
• 204L
• 304L
• 7400A
• 7760
• 9500i

1. 1

   Check the DPF Status Screen on the CommandCenter or corner post display to verify if the 'Parked Cleaning Required' icon is active.

2. 2

   Check for accompanying codes such as 3719.16 (Parked Cleaning Required) or 3936.00 (Unexpected temperature in Exhaust Filter) which may indicate secondary issues.

3. 3

   Verify the machine's filter status is set to Auto Mode so it can attempt passive regenerations.

1. 1

   Perform a Parked Regeneration

   Initiate a parked filter cleaning (regeneration) via the engine settings page as outlined in the Operator's Manual. A forced regeneration by a qualified technician can clear the immediate soot load and reset the parameters.

2. 2

   Evaluate Post-Regeneration

   If DTC 003720.16 persists after a successful parked regeneration, the DPF has reached its maximum physical ash capacity.

3. 3

   Remove the DPF

   The DPF must be removed from the machine for physical servicing.

4. 4

   Professional Ash Cleaning or Replacement

   The DPF must be placed into specialized equipment (such as a high-temperature kiln/blast and bake system) by a professional service to extract the ash. Do NOT attempt to remove ash using water, compressed air, or chemicals.

5. 5

   Reinstall or Replace

   If the DPF is severely restricted or damaged, it must be replaced with a new or remanufactured unit. Reinstall the cleaned or new DPF using new gaskets and V-clamps.