YANMAR-P2002 serious Yanmar ›

DPF Efficiency Below Threshold

The YANMAR-P2002 (Yanmar) diesel fault code means: DPF Efficiency Below Threshold. This is a serious severity code.

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Keep driving?
Limited driving only
DIY difficulty
advanced
Estimated cost
$400-$3,500 clean / $4,000-$7,000 replace

What Are the Symptoms of YANMAR-P2002?

  • Regen lamp, derate on SA424 / LX4900 / ViO80

What Causes YANMAR-P2002? (Most Likely First)

  • Soot loaded DPF (short-duty cycle) Very Likely
  • Ash loaded at service interval (3,000-5,000 hr) Likely
  • Raw fuel contamination from injector leak Possible

Can I Still Drive with YANMAR-P2002?

Limited driving only. YANMAR-P2002 is rated serious severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.

Frequently Asked Questions

What is Yanmar code P2002?

Yanmar P2002: DPF Efficiency Below Threshold. This code is reported on Yanmar equipment running the described engine family.

Can I keep working with Yanmar code P2002?

Limited operation only -- finish the current task then shut down for repair.

How much does Yanmar P2002 cost to fix?

Estimated repair cost: $400-$3,500 clean / $4,000-$7,000 replace. Off-road diesel shop labor runs $125-$175/hr in 2026. Dealer diagnostic software (Yanmar SmartAssist / YDT) is usually required.

Mechanics Guide Step-by-step diagnosis

How Do You Diagnose YANMAR-P2002?

  1. Run parked regen via SmartAssist.

  2. Monitor DPF differential pressure (should drop below 3 kPa post-regen).

  3. If regen fails, professionally clean DPF.

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 Perkins serious Particulate Filter Efficiency Below Threshold Power Stroke serious DPF Efficiency Below Threshold

Which Vehicles Commonly Get YANMAR-P2002?

  • Yanmar SA221 / SA324 / SA424 compact tractors
  • Yanmar YT235 / YT347 / YT359 compact tractors
  • Yanmar LX4100 / LX4900 utility tractors
  • Yanmar ViO17 / ViO25 / ViO35 / ViO45 / ViO55 / ViO80 mini excavators
  • Yanmar B27-3 / B37-3 / B50-3 compact excavators
  • Cub Cadet Yanmar Ex3200 / Lx410 compact tractors (rebadged)
  • John Deere 17G / 26G / 35G compact excavators (Yanmar powered)
  • Takeuchi TB210R / TB216 / TB230 mini excavators (Yanmar powered)

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