So what actually goes wrong with your DPF. Well some common issues are...

  • The pressure differential sensor can fail.
  • Too many DPF regenerations have been carried out. (They have a limited lifespan).
  • The DPF has become overloaded and automatic regeneration is not possible. In this case you need to force the regeneration process using suitable diagnostic equipment.
  • The DPF can break apart internally. 
  • The temperature sensor can fail.
  • The additive tank can run empty. (If fitted).
There are other failures but these are the most common.

We can carry out forced regeneration or pressure cleaning and refitting or total replacement at great rates
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