MajorCommonEngine

Mitsubishi Triton: 4M41 3.2D EGR Valve Carbon Clogging

4M41 3.2D EGR Valve Carbon Clogging is a common engine fault on the Mitsubishi Triton on the 2006–2009 cars, and we rate it major. Putting it right costs $400 to $900 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 34 documented faults on the Mitsubishi Triton.

Vehicle: Mitsubishi Triton
Engine: 4M41
Years: 2006–2009
Fuel: diesel
System: Engine

This page covers the Mitsubishi Triton 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 Triton faults34 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the EGR valve yet. We would rather show none than show a picture of a different part.

What goes wrong

The 4M41 3.2-litre diesel fitted to higher-spec ML/MN Tritons uses an EGR (exhaust gas recirculation) valve that becomes progressively clogged with carbon deposits, restricting airflow and causing rough running, black smoke, and power loss. A well-documented issue across Mitsubishi's 4M41-powered vehicles including Pajero. Common from around 120,000 km onwards, especially where the vehicle is used predominantly on short urban trips.

What you would notice

Rough idle and hesitation under load
Excessive black smoke from exhaust
Loss of power particularly at low RPM
Check engine light with EGR-related fault codes

How to check it

Where to look. Intake manifold area, EGR valve on left side of engine

Request a scan tool reading for EGR fault codes.
Inspect the EGR valve inlet tract for heavy carbon deposits if accessible.
Ask about any EGR cleaning history.
A diesel purge or EGR clean service is a reasonable negotiating point.

Parts involved: EGR valve.

What it costs to put right

$400 to $900 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 EGR valve ever been cleaned or replaced?”
“Has the vehicle spent most of its life on short urban trips or highway driving?”
“Are there any fault codes stored relating to EGR or boost?”

Now check the Mitsubishi Triton 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 Triton buyer questions

Is 4m41 3.2d egr valve carbon clogging serious on a Mitsubishi Triton?

We rate it major and common on the Mitsubishi Triton. The 4M41 3.2-litre diesel fitted to higher-spec ML/MN Tritons uses an EGR (exhaust gas recirculation) valve that becomes progressively clogged with carbon deposits, restricting airflow and causing rough running, black smoke, and power loss. A well-documented issue across Mitsubishi's 4M41-powered vehicles including Pajero. Common from around 120,000 km onwards, especially where the vehicle is used predominantly on short urban trips.

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

$400 to $900 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 Triton years are affected?

Our research records this fault on the 2006–2009 Mitsubishi Triton. 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?

Request a scan tool reading for EGR fault codes. Inspect the EGR valve inlet tract for heavy carbon deposits if accessible. Ask about any EGR cleaning history. A diesel purge or EGR clean service is a reasonable negotiating point. Look here: Intake manifold area, EGR valve on left side of engine