PERKINS-P2002 serious Perkins ›

Particulate Filter Efficiency Below Threshold

The PERKINS-P2002 (Perkins) diesel fault code means: Particulate Filter Efficiency Below Threshold. This is a serious severity code.

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Keep driving?
Yes, with caution
DIY difficulty
advanced
Estimated cost
$900-$2,200 ash clean
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Common Symptoms

  • DPF warning
  • Derate

Probable Causes (Ranked by Likelihood)

  • Ash load at service limit Very Likely
  • Leaking DPF gasket Possible

Frequently Asked Questions

What is Perkins fault code P2002?

Perkins P2002 means: Particulate Filter Efficiency Below Threshold. Serious code -- address promptly to avoid inducement / further damage.

Can I keep operating with Perkins P2002?

Serious fault -- you can move the machine to a shop but don't run it under load. Diagnose with Perkins EST / CAT ET (kin to CAT-badged machines).

How much does it cost to fix Perkins P2002?

Repair cost range: $900-$2,200 ash clean.

Mechanics Guide Step-by-step diagnosis

Step-by-Step Diagnostic Procedure

  1. Send DPF for ash clean at ~4,000 hrs.

Sources 1

This page is built from documented references. Verify against your own service info before repair work.

  • SAE J2012Diagnostic Trouble Code Definitions (defines P2002 as a generic OBD-II code)

P2002 on Other Platforms

The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:

Gas / Automotive (OBD-II) Generic OBD-II definition for P2002 Bobcat serious DPF Efficiency Below Threshold Hino serious DPF Efficiency Below Threshold Isuzu serious DPF Efficiency Below Threshold Bank 1 Kubota serious DPF Efficiency Below Threshold Power Stroke serious DPF Efficiency Below Threshold Yanmar serious DPF Efficiency Below Threshold

Commonly Affected Vehicles

  • CAT and JCB compact wheel loaders with Perkins 854E
  • CAT 244D / 246D / 262D skid steers (Perkins-derived)
  • JCB 3CX / 4CX backhoes with 1104D / 1204E
  • Manitou telehandlers with Perkins 1104D / 1204E
  • Perkins 2506 / 2806 industrial gensets

Explore More

More Perkins codes → Diesel home All diesel codes Heavy-duty Guides

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