320i N46B20B no MAF data

Terryk · 03-30-2016, 05:24 PM

hi to all. for the last year i have a very low fuel consumption. also I used to remember that I was able to read MAF values via torque pro.
now, whatever App or program i try to use (torque pro, carly, inpa, dis) i am not able to read my MAF. moreover as I said my consumptio is quite low and the car has same behaviour in what regards acceleration. never had a fault code. I tried to unplug the maf and drove for at least 15 minutes but again no fault code and no issue with engine power etc.
I think that all these tend to show a problem with the dme and maf connection? maybe there is a need for a new software update? truth is i am not sure how the engine performs great with maf plugged in and totally unplugged too.
maybe this is due to "saved" default fuel trims if maf goes off?
what should i do? thanks.

Terryk · 04-01-2016, 05:44 PM

any thoughts? this is a strange issue. whoever i told it he hasn't heard it before. even bmw specialists.
thanks

Len_Beach · 04-02-2016, 05:09 AM

Surprised you don't get a fault code when the MAF is unplugged. You should get short circuit errors.

What software are you using?

Terryk · 04-04-2016, 12:31 PM

hi! thanks for asking! I have used everything available on my hand!
meaning torque pro, carly, dis, inpa!
also, i visited a bmw specialist garage and spoke to them and they are thinking 2 probabilities:
1. dme stopped reading maf values due to a dme failure and probably it needs a new firmware (updated)
or
2. maf's failure and dme works with "default standarised" values

any thoughts? i am planning to go and check it at another specialist too...

Len_Beach · 04-24-2016, 08:01 AM

I've just seen this Terry. I didn't get a notification for some reason.
Did you get this sorted?

03-30-2016, 05:24 PM	#1
Terryk Second Lieutenant 26 Rep 231 Posts Drives: F30 mineral grey N47 ed Join Date: Jan 2013 Location: Hertfordshire, UK iTrader: (0)	320i N46B20B no MAF data hi to all. for the last year i have a very low fuel consumption. also I used to remember that I was able to read MAF values via torque pro. now, whatever App or program i try to use (torque pro, carly, inpa, dis) i am not able to read my MAF. moreover as I said my consumptio is quite low and the car has same behaviour in what regards acceleration. never had a fault code. I tried to unplug the maf and drove for at least 15 minutes but again no fault code and no issue with engine power etc. I think that all these tend to show a problem with the dme and maf connection? maybe there is a need for a new software update? truth is i am not sure how the engine performs great with maf plugged in and totally unplugged too. maybe this is due to "saved" default fuel trims if maf goes off? what should i do? thanks. __________________ F30 mineral grey N47 ed
	Appreciate 0 Tweet Quote

04-01-2016, 05:44 PM	#2
Terryk Second Lieutenant 26 Rep 231 Posts Drives: F30 mineral grey N47 ed Join Date: Jan 2013 Location: Hertfordshire, UK iTrader: (0)	any thoughts? this is a strange issue. whoever i told it he hasn't heard it before. even bmw specialists. thanks
	Appreciate 0 Quote

04-02-2016, 05:09 AM	#3
Len_Beach Major 187 Rep 1,247 Posts Drives: 435d Join Date: Jun 2011 Location: UK iTrader: (1)	Surprised you don't get a fault code when the MAF is unplugged. You should get short circuit errors. What software are you using?
	Appreciate 0 Quote

04-04-2016, 12:31 PM	#4
Terryk Second Lieutenant 26 Rep 231 Posts Drives: F30 mineral grey N47 ed Join Date: Jan 2013 Location: Hertfordshire, UK iTrader: (0)	hi! thanks for asking! I have used everything available on my hand! meaning torque pro, carly, dis, inpa! also, i visited a bmw specialist garage and spoke to them and they are thinking 2 probabilities: 1. dme stopped reading maf values due to a dme failure and probably it needs a new firmware (updated) or 2. maf's failure and dme works with "default standarised" values any thoughts? i am planning to go and check it at another specialist too... __________________ F30 mineral grey N47 ed
	Appreciate 0 Quote

04-24-2016, 08:01 AM	#5
Len_Beach Major 187 Rep 1,247 Posts Drives: 435d Join Date: Jun 2011 Location: UK iTrader: (1)	I've just seen this Terry. I didn't get a notification for some reason. Did you get this sorted?
	Appreciate 0 Quote