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Mazda 6 2012-2018 Diesel 2.2 skyactive Warranty Win

451 views 4 replies 2 participants last post by  JWAJ  
#1 ·
Hi all, I’m J from AUS. I wanted to share my experience with my 2013 Mazda 6 Atenza Diesel (2.2 Skyactiv) and the notorious engine issues some of us face. Recently, my car threw up the P06DE 'Death Code' with the 'Low oil pressure, possible engine damage' warning. It went into limp mode and eventually broke down. I took it straight to Mazda, who I know have warranted these engines before—even on used 2013 models like mine- an ex colleague at the service centre told me and my own story advocates this.

First time around, they barely checked it, just cleared the code and sent me off—big mistake on their part, as it only worsened the issue. After pushing them to properly diagnose it at no cost (which they should’ve done initially), they found: 'Oil pick-up pretty blocked, one injector not sealing properly, and one camshaft worn.' "My warranty guy stepped in, sent a quote to Mazda",

and two weeks later, they agreed to replace the engine under warranty.

My car’s only done 130k!

From what I’ve seen on forums, this 'low oil pressure' issue is way too common with the 2.2 Skyactiv diesel (2012-2018). It seems these engines need to be driven hard and often to even have a shot at avoiding it, but even then, many fail early. Mazda’s been replacing them under warranty for heaps of owners—sometimes even out of warranty—if the logbook’s solid (like mine). My case was likely helped by their initial mishandling, but the point is: they do cover this.

i do wonder if the common warranties are due to the 2019 recall that involved 35k+ Mazda Skyactive diesel cars in Australia including the mazda 6 2012-2018.

So, if this happens to you, don’t let them brush it off. Push for a proper diagnosis and lean on the fact that Mazda knows this is a widespread problem. It’s a great car with a shocking engine—don’t let them dodge the fix or the warranty!
 
#2 ·
The issue with ALL high-pressure common-rail diesels is that a leaking injector will always do serious damage if not immediately corrected because the amount of fuel that can flow into the cylinder, wash down the walls and dilute the oil, all of which cause accelerated wear very rapidly.

As a result you simply can never let that situation continue in such an engine. If you do it will be destroyed. Any diesel that ever "makes oil", even in small amounts, has a leaking injector problem and it must be immediately determined which injector it is and fixed because if you don't this is what will happen.

The same thing, by the way, can happen with high-pressure DI gasoline engines. Mazda hasn't had trouble with this on their gasoline models, but has on the diesels. I don't know why one does and the other does not; both have high-pressure fuel systems and this is something that Mazda should have identified the cause of on the diesels several years ago and apparently has not. It is almost-certainly either a problem with QC on the injectors or a filtration issue (in other words, fuel quality is insufficient and the filtration is insufficient to cover it.)

If I owned one of these I'd be figuring out where I could mount a filtration system of materially-better quality in front of the factory setup as any sort of debris that gets through can and will hang injectors and will cause this sort of failure. That's not an expensive retrofit if you can find room for it, and eliminates the possibility of a bad load of fuel coupled with a marginal factory filtration system being the root cause.

If its a materials problem in the injectors that's on Mazda and there really isn't a good way for an owner to do anything about it.
 
#4 ·
I don't know. If its a filtration issue yes. If its a materials issue then perhaps not if they've fixed it, quietly.

There are plenty of reports of trouble here and elsewhere, and all trace to the same event -- but there is no conclusive evidence as to the "why."
 
#5 ·
I think its important though to atleast give those hope, and awareness, however, they wont know until it happens to them. so hopefully they find this post, and realise that their is no bandaid fix, and if their is . SELL THE CAR ASAP (if its even worth anything with this issue) or get a warranty