Question 1

What does P2002 mean?

Accepted Answer

P2002 - Diesel Particulate Filter Efficiency Below Threshold. The DPF (diesel particulate filter) is not filtering soot efficiently enough. Common on diesel vehicles.

Question 2

What are the symptoms of P2002?

Accepted Answer

Check engine light, DPF warning light, Reduced power, Increased fuel consumption, White smoke

Question 3

What causes P2002?

Accepted Answer

DPF plugged with soot (needs regen), Failed DPF regen system, Short trip driving preventing regen, DPF physically damaged, Exhaust temperature sensor fault

Question 4

How much does it cost to fix P2002?

Accepted Answer

Typical repair cost: $200-$5,000. Try a long highway drive (30+ minutes at highway speed) to force a DPF regeneration. If the DPF light has been on too long, a forced regen with a scan tool may be needed.

P2002 — Diesel Particulate Filter Efficiency Below Threshold

Don't guess — diagnose P2002 the right way

Common symptoms of P2002

Common causes of P2002

Repair cost & difficulty

Vehicles commonly affected

Related trouble codes