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What is causing my 2019 Mitsubishi Triton to have DPF issues?

Asked by Sandy

I have had ongoing DPF issues with a 2019 Mitsubishi Triton. I've done 24,000km of variable driving in 12 months and have had to have six forced regenerations. Mitsubishi claims no issue and the vehicle is operating within its parameters. I believe the vehicle is faulty so want to exit it. I am considering a Mitsubishi Pajero Sport for its towing, but I’m interested to know if your team know of the same DPF issues with the Pajero Sport? I can find next to no comments on this subject on the web, but plenty on the Triton, possibly due to different mapping? 

Answered by CarsGuide

17 Sep 2021 David Morley

Since both the Triton and Pajero Sport boast exactly the same power and torque outputs, I doubt whether there’s a huge difference (if any at all) in the mapping of either engine. Which suggests that switching from one to the other without changing your driving patterns would be a very good way of reproducing the Triton’s DPF problems in a Pajero Sport. My suspicion is that you’re having to force multiple DPF regenerations because your driving habits don’t let the engine get up to the correct temperature often enough to allow the vehicle to conduct its own, automatic regeneration. This is a pretty common problem with modern turbo-diesels and it’s not a criticism of your driving, simply a confirmation that these modern diesel engines don’t like short trips. Then again, 24,000km in 12 months doesn’t sound like the vehicle is used solely for the school run.

Six regenerations in 24,000km sounds like an awful lot, also, so I’d be more concerned that your dealer is underplaying the situation to avoid dealing with a problem in your specific vehicle. Has the vehicle been electronically scanned? Perhaps this might show up a dud sensor or other problem that’s making the computer think it needs another regeneration. We’ve heard of a faulty temperature sensor on this model Triton that can lead the DPF to offer up a false alarm that it’s ready for a regeneration. That could explain the high number of regenerations the vehicle has demanded. Again, a scan might tell the full story.

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