Particulate Filter Efficiency Below Threshold
The PERKINS-P2002 (Perkins) diesel fault code means: Particulate Filter Efficiency Below Threshold. This is a serious severity code.
- Keep driving?
- Yes, but fix soon
- 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
Step-by-Step Diagnostic Procedure
Send DPF for ash clean at ~4,000 hrs.
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.
P2002 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown: