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Mitsubishi Delica: 4N14 Diesel DPF Blockage and Regeneration Failure

4N14 Diesel DPF Blockage and Regeneration Failure is a common engine fault on the Mitsubishi Delica on the 2013–2019 cars, and we rate it major. Putting it right costs $1,500 to $4,500 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 18 documented faults on the Mitsubishi Delica.

Vehicle
Mitsubishi Delica
Engine
2.3L
Years
2013–2019
Fuel
diesel
Gearbox
auto
System
Engine

This page covers the Mitsubishi Delica as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Mitsubishi Delica faults18 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Diesel particulate filter yet. We would rather show none than show a picture of a different part.

What goes wrong

The 4N14 2.2L diesel Delica D:5 uses a Diesel Particulate Filter that blocks when passive or active regeneration cycles fail to complete — a common outcome for vehicles used on short urban trips at low sustained speeds. A blocked DPF severely restricts exhaust flow, causing power loss, increased fuel consumption, and progression to DPF warning lights and limp mode. NZ road conditions and the Delica's combined urban and recreational 4WD use pattern make sustained motorway regeneration difficult for many owners.

What you would notice

  • DPF regeneration warning or DPF blocked warning light on instrument cluster
  • Significant loss of power, especially above idle
  • Noticeably increased fuel consumption
  • Vehicle entering limp mode and not allowing full throttle

How to check it

Where to look. DPF canister in exhaust system, mid-chassis or under rear floor depending on variant

Ask about driving pattern history. Review service history for any DPF cleaning or replacement. A forced active regeneration cycle may be required post-purchase if the vehicle has been used primarily for short trips. If a workshop inspection is possible: Check for active DPF fault codes or stored regeneration failure events with a scan tool.

Parts involved: Diesel particulate filter.

What it costs to put right

$1,500 to $4,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

  • “Has the DPF warning light ever come on?”
  • “Has the DPF been professionally cleaned or replaced?”
  • “Is the vehicle primarily used for short urban trips rather than highway or open-road driving?”

Now check the Mitsubishi Delica you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Mitsubishi Delica buyer questions

Is 4n14 diesel dpf blockage and regeneration failure serious on a Mitsubishi Delica?

We rate it major and common on the Mitsubishi Delica. The 4N14 2.2L diesel Delica D:5 uses a Diesel Particulate Filter that blocks when passive or active regeneration cycles fail to complete — a common outcome for vehicles used on short urban trips at low sustained speeds. A blocked DPF severely restricts exhaust flow, causing power loss, increased fuel consumption, and progression to DPF warning lights and limp mode. NZ road conditions and the Delica's combined urban and recreational 4WD use pattern make sustained motorway regeneration difficult for many owners.

How much does it cost to fix on a Mitsubishi Delica?

$1,500 to $4,500 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Mitsubishi Delica years are affected?

Our research records this fault on the 2013–2019 Mitsubishi Delica. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Ask about driving pattern history. Review service history for any DPF cleaning or replacement. A forced active regeneration cycle may be required post-purchase if the vehicle has been used primarily for short trips. If a workshop inspection is possible: Check for active DPF fault codes or stored regeneration failure events with a scan tool. Look here: DPF canister in exhaust system, mid-chassis or under rear floor depending on variant