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2017 Ram 1500 EcoDiesel DPF Regeneration Issues & CEL

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Angela R. · rep 0 · May 22, 3:31 AM · 1 replies · solved · Question

Vehicle: 2017 Ram 1500 EcoDiesel Laramie

Hey everyone,

I own a 2017 Ram 1500 EcoDiesel, and I've been having recurring issues with the Diesel Particulate Filter (DPF) regeneration. The truck often tries to regenerate, but it seems to fail, leading to reduced power and eventually throwing a Check Engine Light. I've seen codes like P2002 pop up.

I do a mix of city and highway driving, but I try to ensure I get enough highway miles for proper regeneration cycles. It feels like the truck is constantly in a limp mode or struggling to breathe. I'm concerned about the longevity of the emissions system.

Has anyone with a 2017 EcoDiesel experienced similar DPF problems? What were your solutions? Is there anything I can do to help it regenerate more effectively, or is this a sign of a bigger problem with the DPF or EGR system?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:31 AM

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ClearTheCode admin answer:

DPF regeneration issues are common in diesel vehicles, especially if driving conditions aren't ideal for complete cycles. For your 2017 Ram 1500 EcoDiesel, several factors could be contributing to the P2002 code (Diesel Particulate Filter Efficiency Below Threshold Bank 1) and related problems:

  1. Incomplete Regeneration Cycles: Frequent short trips or excessive idling prevent the DPF from reaching the high temperatures needed to burn off accumulated soot. This leads to excessive soot loading and eventually triggers the CEL.
  2. Faulty DPF Sensors: The DPF system relies on pressure differential sensors and temperature sensors to monitor soot levels and regeneration progress. A faulty sensor can provide incorrect readings, leading the ECM to believe the DPF is clogged when it's not, or to fail regeneration attempts.
  3. EGR System Malfunction: The Exhaust Gas Recirculation (EGR) system can get clogged with soot, affecting exhaust flow and potentially impacting DPF performance. An inefficient EGR can lead to higher soot production, overwhelming the DPF.
  4. Fuel Injector Issues: Malfunctioning fuel injectors can cause incomplete combustion, leading to increased soot production and faster DPF clogging.
  5. DPF Itself is Clogged/Damaged: Over time, if regenerations consistently fail, the DPF can become permanently clogged with ash (which doesn't burn off) or damaged.

Diagnostics:

  • A professional scan tool can monitor DPF soot load, differential pressure, and sensor readings in real-time. This is crucial for diagnosing the root cause.
  • Check for other related codes, such as P0401 (EGR Flow Insufficient) or P2453 (DPF Differential Pressure Sensor Performance).

When to See a Shop: Given the recurring nature and the P2002 code, it's imperative to have your EcoDiesel inspected by a diesel specialist or dealership. They can perform a forced regeneration (if possible), diagnose sensor failures, inspect the EGR system, and determine if the DPF requires cleaning or replacement. Continued driving with a clogged DPF can lead to further damage to the exhaust system and reduced engine performance and longevity.

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