CX-5 Diesel engine light on and oil light red

[gareth63]

Hi all I'm new to this, I've just bought a CX-5 2.2 Diesel 2016 sport nav.

It's now showing off with the engine management light on and oil light in red. I've checked oil level which is fine. I've plugged in obd and I get a code pP055f but says no in formation in database.

It is now in limp mode ,can anybody help with this code. It seems possibly an emissions related problem.

Any help would be greatly appreciated, thanks!

 

[HyFlyer]

Hello, unfortunately those older 2.2 diesels have many issues related to carbon buildup. In your case with low/no oil pressure, the cause is likely the oil pump screen plugged up with carbon which is starving it of oil, which in turn starves the entire engine of oil wrecking bearings in the engine, timing chain and turbo.

You're probably looking at rebuilding the engine and a new turbo.

 

[Poitda]

Hello, unfortunately those older 2.2 diesels have many issues related to carbon buildup. In your case with low/no oil pressure, the cause is likely the oil pump screen plugged up with carbon which is starving it of oil, which in turn starves the entire engine of oil wrecking bearings in the engine, timing chain and turbo.

You're probably looking at rebuilding the engine and a new turbo.

That would be worse case scenario. Hopefully this has been caught early so all you need is a carbon clean, new oil pick-up screen and maybe new exhaust cam.

 

[Moonlighter]

By 2016 the 2.2 diesel had improvements that greatly reduced the number of the problems with cams etc that have been mentioned earlier. If yours has the electronic park brake, its the updated version.

Definitely dont drive it any further, and get it towed to a good Mazda dealer for diagnosis. Depending on which country you live in (you didnt say) Mazda in Australia at least has been very good in stepping up to help out 2.2 diesel owners even though well out of warranty. They replaced the engine FOC in my brothers CX5 when it was 4 years out of warranty.

Having owned a 2.2 D 2016 model until a year ago, you need to be very careful about the engine oil used. Check your owners manual for the spec required, and using just any old oil will result in the dpf being clogged up and sludge buildup in the engine causing catastrophic failure.

They require a low/mid SAPS oil, mine required a C1 spec, in some other countries it was C2. These C1/C2 are the specs that tell you if the oil has low-mid SAPS level (ash content) oil.

If it comes to a warranty/good will issue, they will want to look at the service history, and they will likely do an oil test to verify that the correct oil has been used.

 

[TheMAN]

those SH diesel motors also tend to get drowned with fuel in the crankcase due to faulty ECU programming and it happens with frequent short trips and when it tries to do the DPF burn off or something to that effect from what I've heard

so, the "oil" level might look good, but it might not be just oil at alll but diesel + oil lol

 

[Moonlighter]

those SH diesel motors also tend to get drowned with fuel in the crankcase due to faulty ECU programming and it happens with frequent short trips and when it tries to do the DPF burn off or something to that effect from what I've heard

so, the "oil" level might look good, but it might not be just oil at alll but diesel + oil lol

In those circumstances , where contaminated with fuel, the oil level is always very high.