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P2002 – Diesel Particulate Filter Efficiency Below Threshold – Ford TDCi (Ford 1.5 / 1.6 TDCi)

Fault code P2002 means "Diesel Particulate Filter Efficiency Below Threshold – Ford TDCi". It is common on 1.5 / 1.6 TDCi (Fiesta, Focus, C-Max, Kuga, Transit Connect), 2.0 TDCi (Focus, Mondeo, Kuga, S-Max, Galaxy, Transit), Some older models with DPF additive fluid tank engines. Below are the real-world causes, step-by-step tests and OEM part numbers.

Last updated

P2002 quick summary

Fault codeP2002
MeaningDiesel Particulate Filter Efficiency Below Threshold – Ford TDCi
SystemPowertrain (Engine & Transmission)
VehiclesFord
Common on1.5 / 1.6 TDCi (Fiesta, Focus, C-Max, Kuga, Transit Connect), 2.0 TDCi (Focus, Mondeo, Kuga, S-Max, Galaxy, Transit), Some older models with DPF additive fluid tank
SeverityMedium
Can I drive?Yes in the short term, but the engine may go into limp mode. Fix it soon.
Repair cost€0 – €1,800

Symptoms of P2002

  • DPF or engine warning light
  • Reduced power
  • Frequent regenerations
  • Higher fuel consumption
  • Engine oil level rising

Most common causes of P2002 (most likely first)

Mechanic's Pro Tip

Use FORScan to read the soot load and run a service regeneration. Check the differential pressure sensor and its hoses before replacing the filter. Some older Ford diesels built with PSA use a DPF additive fluid tank – if the additive runs out, the DPF clogs; check the level and top up or reset after refilling.

  1. 1.DPF loaded with soot from short trips

    Most likely

  2. 2.Faulty differential pressure sensor or hoses

  3. 3.Empty DPF additive tank (some models)

  4. 4.EGR, injector or turbo fault causing excess soot

  5. 5.Ash-loaded DPF at high mileage

Step-by-step diagnostic guide

  1. 1

    Read all codes and soot/ash load values with FORScan or IDS.

  2. 2

    Check the differential pressure sensor and hoses.

  3. 3

    Check the additive fluid level if fitted.

  4. 4

    Fix any EGR, injector or turbo faults first.

  5. 5

    Run a service regeneration; clean or replace the DPF if ash-loaded.

How do I read fault codes? →Where the OBD2 port is, which scanner to use and how to read and clear codes step by step.

Frequently asked questions

Can FORScan regenerate the DPF?

Yes, FORScan can run a service (forced) regeneration on most Ford diesels. Follow the safety instructions – the exhaust gets very hot.

How do I avoid DPF problems?

Drive regularly at motorway speed for 20–30 minutes and do not switch off during an active regeneration.

Related fault codes

This guide is for information only. Working on vehicles can be dangerous — if you are unsure, have the car checked by a qualified mechanic. Values can differ between model years; always check the manufacturer's repair information.