code p0172 p0175

sleepydragon_ca · 08-11-2010, 12:48 AM

It's about 2 month now since I had my BMW performance exhaust on.

Few month before that I got the afe intake. (no code was showing)

As soon as I got the exhaust on, the code came on, after that I had someone cleared it and about every two week or so the same code would come back on.... today I finally decided to take it back to the dealer and have them check it out... sooo I put the ome intake box back on so the dealer wouldn't give me shit... went out for a drive to make sure everything is good and guess what? the check engine light went off!! What should I do??

Wlew · 08-11-2010, 01:40 AM

MAF sensor problems maybe? improper install? I have the AFE and have no problems what so ever. Most people do not as well. re-install and see if it happens again.

also, it a lot of times is your gas cap. weird, I know. sometimes it is not tightened enough and will throw a code.

08-11-2010, 12:48 AM	#1
sleepydragon_ca New Member 5 Rep 24 Posts Drives: 2006 330i Join Date: Jun 2009 Location: Toronto ON iTrader: (2)	code p0172 p0175 It's about 2 month now since I had my BMW performance exhaust on. Few month before that I got the afe intake. (no code was showing) As soon as I got the exhaust on, the code came on, after that I had someone cleared it and about every two week or so the same code would come back on.... today I finally decided to take it back to the dealer and have them check it out... sooo I put the ome intake box back on so the dealer wouldn't give me shit... went out for a drive to make sure everything is good and guess what? the check engine light went off!! What should I do??
	Appreciate 0 Tweet Quote

08-11-2010, 01:40 AM	#2
Wlew Major 77 Rep 1,116 Posts Drives: 2011 E90 335i Join Date: Sep 2009 Location: Washington, DC iTrader: (12)	MAF sensor problems maybe? improper install? I have the AFE and have no problems what so ever. Most people do not as well. re-install and see if it happens again. also, it a lot of times is your gas cap. weird, I know. sometimes it is not tightened enough and will throw a code. __________________ 2011 335i Sports Package \| VRSF FMIC \| Cobb AP3 \| Dinan Exhaust \| BMS Intake \| VRSF CP \| Lux H8 Angel Eyes \| Mtec LED Fogs \|
	Appreciate 0 Quote