Maf issue

[Maxpower200]

Seems that since i have had my car remapped i have had maf issues po101, it only seems to throw the code up when i put my foot down? Car starts runs and drives fine, no smoke. Any idea would be much appreciated.

 

[STDOUBT]

Welcome to TDIClub!

Best ideas I would have are in the "Possible Solutions" section of this page:

16485/P0101/000257 - Ross-Tech Wiki

wiki.ross-tech.com

You might also ask whomever remapped your car to weigh in on your problem.

 

[Mozambiquer]

Did you happen to put a cone air filter on it as well? Knowing what car it is will also help.

Seems that since i have had my car remapped i have had maf issues po101, it only seems to throw the code up when i put my foot down? Car starts runs and drives fine, no smoke. Any idea would be much appreciated.

 

[Maxpower200]

Did you happen to put a cone air filter on it as well? Knowing what car it is will also help.

Hi, its a 2007 2.0tdi 140 b6 passat and no its just a panel filter replacing the paper one

 

[Maxpower200]

Welcome to TDIClub!

Best ideas I would have are in the "Possible Solutions" section of this page:

16485/P0101/000257 - Ross-Tech Wiki

wiki.ross-tech.com

You might also ask whomever remapped your car to weigh in on your problem.

Thanks for your reply, i will read into the post and also have a chat with the garage.

 

[Mozambiquer]

Hi, its a 2007 2.0tdi 140 b6 passat and no its just a panel filter replacing the paper one

Is it an oiled panel filter? I believe the 2007 would be a PD engine, I've seen that code when the camshaft fails as well, since it will blow back through the intake and it messes up the maf readings. Then, oiled filters, whether a panel filter, or cone type, will cause problems with the VW maf, since they have a hot wire maf that the oil residue will cause to have a faulty reading, and it will cause premature failure of the sensor.

 

[Maxpower200]

Is it an oiled panel filter? I believe the 2007 would be a PD engine, I've seen that code when the camshaft fails as well, since it will blow back through the intake and it messes up the maf readings. Then, oiled filters, whether a panel filter, or cone type, will cause problems with the VW maf, since they have a hot wire maf that the oil residue will cause to have a faulty reading, and it will cause premature failure of the sensor.

I believe the pipe cross ones are not like k&n with the oil issue, its a strange situation as i have no issues unless i am sticking my foot down, i will look into the cam and not push her to hard also have a chat with the guy who mapped it and get back to you guys.
Thank you for taking time to help

 

[Mozambiquer]

I believe the pipe cross ones are not like k&n with the oil issue, its a strange situation as i have no issues unless i am sticking my foot down, i will look into the cam and not push her to hard also have a chat with the guy who mapped it and get back to you guys.
Thank you for taking time to help

With the problem only showing up with the sticking your foot down, I would be quite suspicious of the camshaft.

 

[Maxpower200]

With the problem only showing up with the sticking your foot down, I would be quite suspicious of the camshaft.

Ok thanks ill have a read up now and ill let you no how I get on tomorrow

 

[Maxpower200]

Back agin as still have this nightmare maf issue! I jave checked everthing and all seems to be working fine l, i have just come across this on ebay and wounder if it was somthing of interest, i cant work out how to put a picture up but its called a air flow Straightener made by vw

 

[oilhammer]

Often small charge air leaks will manifest themselves as a MAF implausibility DTC before a low boost P0299 DTC crops up. I'd closely check the entire charge air tract, with a smoke machine if necessary.

 

[Maxpower200]

Thanks for you reply, this issue seems to have started after i had it remaped and with my foot down but that could make a slight air leak bigger causing it to occur more? The car runs fine good boost and mpg i will have a look into getting a smoke test done.... I will celebrate when i get to the bottom of this issue!!

 

[oilhammer]

Tiny insignificant charge air leaks suddenly become something more when a new tune requests more boost.

 

[Maxpower200]

Thanks im taking the map of later this week to see if the remap is sucking in more air and throwing the maf out and i will also look for any leak but i think a smoke test might be needed as i have go over and over every connection with no joy

 

[Maxpower200]

Well..... I had my map removed and the garage said it was duento the mapping, its booked in for tuesday to get another map but i did a scan just to be sure and forgot my egr is blanked off po401coming up, is that a issue to drive with? Thanks in advance

 

[BobnOH]

You should be good to go. New tune should address P0401. It's an EGR code cause yours is returning bad data (it's blocked off).

 

[Maxpower200]

Cheerw for the reply slowly learning from this forum