DPF Off Service


Deactivation Diesel Particulate Filter regeneration process.

In our large database, we have files to disable DPF (FAP) maps in every car model. Our engineers constantly work to keep the database up to date. Use our experience to reprogram your ECU and deactivate the DPF regeneration process.

Our DPF Off files have already been trusted by dozens of car workshops around the world. Join them today!


Diesel particulate filter (called DPF or FAP) is a filter located just after the turbocharger and is specially designed to reduce the amount of diesel particulate matter (soot / ash). The purpose of this filter is to create cleaner / more environmentally friendly exhaust gases emitted to the atmosphere.

Diesel particulate filter gradually decreases its efficiency and is more and more clogged, which is a normal part of its life. A process called regeneration sometimes aims to “clean up” the particle filter. Unfortunately, this requires special driving conditions, and if they are not met, the degree of filter clogging may exceed the threshold where the engine control computer is capable of regenerating the filter – which leads to power loss problems and even the risk of damage to other equipment due to overheating of the filter .


A substantially blocked DPF filter is usually caused by another major problem. It is worth taking further diagnostics to find the reason for this situation.

Things that can lead to blocking the DPF filter:

  • Short trips – vehicles with a large “urban driving” are more prone to blocking because the DPF filter does not reach sufficient temperature. In order for the DPF regeneration process to work efficiently and burn coal deposits, the engine must often reach the correct operating temperature.
  • Damaged / defective sensors – DPF has several sensors that are installed before and after the filter. These sensors are adapted to monitor the initial and final temperatures as well as the back pressure of the filter. If one or more of these sensors fail, the regeneration process may stop running.
  • Defective / Damaged EGR Valve – The EGR valve is designed to recirculate the exhaust gases back to the engine before passing through the DPF. In some cars, if the EGR system is not working effectively or is blocked, the amount of exhaust gas flowing through the DPF will be increased potentially increasing the blocking of the DPF.
  • Faulty / damaged swirl flaps – Like the EGR valve, the swivel flaps are fitted to help control the emissions in the vehicle. If they do not work effectively, it can potentially accelerate DPF blocking.
  • Failed Regeneration – Some conditions must be met before the DPF can regenerate. If we stop this process or these prerequisites are not met, the DPF filter will not regenerate.


Below we present a list of common errors related to DPF. All of these problems can be solved by removing DPF and remapping ECU using our DPF Off files.

  • P0470 – Exhaust pressure sensor malfunction
  • P0471 – Exhaust pressure sensor range/performance
  • P2002 – DPF efficiency below threshold (Bank 1)
  • P2003 – DPF efficiency below threshold (Bank 2)
  • P2031 – Exhaust gas temperature sensor circuit (bank 1 sensor 2)
  • P2032 – Exhaust gas temperature sensor circuit low (bank 1 sensor 2)
  • P2033 – Exhaust gas temperature sensor circuit high (bank 1 sensor 2)
  • P2034 – Exhaust gas temperature sensor circuit (bank 2 sensor 2)
  • P2035 – Exhaust gas temperature sensor circuit low (bank 2 sensor 2)
  • P2036 – Exhaust gas temperature sensor circuit high (bank 2 sensor 2)
  • P242F – Dpf restriction – Ash accumulation
  • P244A – DPF differential pressure too low (Bank 1)
  • P244B – DPF differential pressure too high (Bank 1)
  • P2452 – DPF pressure sensor A circuit
  • P2453 – DPF pressure sensor A circuit range/performance
  • P2454 – DPF pressure sensor A circuit low
  • P2455 – DPF pressure sensor A circuit high
  • P2458 – DPF regeneration duration
  • P2459 – DPF regeneration frequency
  • P2463 – DPF Restriction – Soot accumulatio


Symptoms that can be observed when there is something wrong with the DPF / FAP and you should look for professional car workshop service:

  • Smoke behind a car
  • Higher fuel consumption
  • Turbo Lag
  • Emergency Mode
  • DPF/FAP Light
  • Engine light

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