my car randomly shoots out these Malfunctions. When I reset the car they go away but then randomly come up again.

has anyone had this issue before and if so what was the fix?

 

What fault codes are you deleting?

 

I'm not deleting them, once I turn the engine off the lights go off but come back again. I have replaced the break light switch, cleaned the filter and MAF sensor, still having issues!

 

Hi, did you manage to sort out the issue? I have been facing exactly the same issue in my 2015 Mazda 3 2.2d for quite a long now.

 

Looking at the rev counter I believe its a diesel.


1st step is always scanning for fault codes.

( If I had to guess, it would be P0471 or P0472. Exhaust pressure sensor.)

 

Mine showed P0471 at first. Replaced the exhaust pressure sensor. Didn't fix the issue. Now it comes up with P0101 "MAF circuit/range performance".

 

Have you found a fix for this? I have tried the exact same steps as you and am still having this issue

 

Hi, I had this fault 5000 miles ago and discovered a pile of rags underneath my air filter! Once removed and new filter installed all cleared.
unfortunately the fault has appeared again but i am unable to delete the error this time, before I could go 50 plus miles and delete each time. Until I found the fault.
not sure where to go from here.

 

Welcome to the foum

So first you are not deleted the DTC only turning off the dash cuation check engine light. Dont worry most think how you do. If the problem is not actatully resoved it goes in to a [permenat area of the ECU and will check it depending on the cycle registry for that DTC. If the error after a number of compltet engine cyles was not solved it will generate the chaeck engine light again.

So in a nut shell you have not solved your issue.

 

Thank you, I realise that but unsure where to go next. By the way it’s on a Mazda CX5 2.2 sport.