High Mileage 330xi with P1415 code

Strictly4Boosting · 01-12-2013, 10:43 AM

Hello everyone, I have a 330xi with 120k that I just recently purchased. I have the following codes.

P0171
P0174
P0102
P1415

I know that both o2 sensors are ( p0171 & p0174 ) but I dont believe they both failed at the same time.

I also have P0102 which is the mass air flow. The car is running extremely rich because my gas mileage is around 11mpg and my rear bumper is pretty much black.

I dont understand what the main cause of all these codes to come up is. I am about to change the mass air flow $300 because it's my last hope. I do have a p1415 secondary air pump. I dont see a secondary air pump anywhere but I believe its under the intake manifold. I hear it in the morning running fine. I've checked lines to see if there is any leak but i don't seem to find anything off. Is there anyone out there with the same problem they had that can help me diagnose this car.

jan31 · 01-12-2013, 11:03 AM

You can also check for vacuum leaks. I had p0171,p0174 on my car and was a vacuum leak on the intake boot and ccv hose.

Strictly4Boosting · 01-12-2013, 11:33 AM

okay where is the ccv hose , or what is the ccv? is that the same thing as pcv valve?

queensfield · 01-12-2013, 06:43 PM

I would change the O2 sensors first- they are due to be changed at 120k miles. There are four total- two pre-cat and two post-cat. You can only change the pre-cat ones, since they are most likely at the end of their life. Then, I would clean the mass air flow sensor using the cleaner sold at any local hardware store- be very careful, since it is fragile. If this does not fix your problems, then it is wise to check for vacuum leaks.

01-12-2013, 10:43 AM	#1
Strictly4Boosting Enlisted Member 15 Rep 46 Posts Drives: 2006 Bmw 330xi Join Date: Jan 2013 Location: Kearny NJ iTrader: (0)	High Mileage 330xi with P1415 code Hello everyone, I have a 330xi with 120k that I just recently purchased. I have the following codes. P0171 P0174 P0102 P1415 I know that both o2 sensors are ( p0171 & p0174 ) but I dont believe they both failed at the same time. I also have P0102 which is the mass air flow. The car is running extremely rich because my gas mileage is around 11mpg and my rear bumper is pretty much black. I dont understand what the main cause of all these codes to come up is. I am about to change the mass air flow $300 because it's my last hope. I do have a p1415 secondary air pump. I dont see a secondary air pump anywhere but I believe its under the intake manifold. I hear it in the morning running fine. I've checked lines to see if there is any leak but i don't seem to find anything off. Is there anyone out there with the same problem they had that can help me diagnose this car.
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01-12-2013, 11:03 AM	#2
jan31 First Lieutenant 37 Rep 332 Posts Drives: 2014 F32 428I Xdrive (N26) Join Date: Dec 2012 Location: SA, TX iTrader: (1) Garage List 2014 F32 428I XDRIVE [0.00]	You can also check for vacuum leaks. I had p0171,p0174 on my car and was a vacuum leak on the intake boot and ccv hose. __________________
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01-12-2013, 11:33 AM	#3
Strictly4Boosting Enlisted Member 15 Rep 46 Posts Drives: 2006 Bmw 330xi Join Date: Jan 2013 Location: Kearny NJ iTrader: (0)	okay where is the ccv hose , or what is the ccv? is that the same thing as pcv valve?
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01-12-2013, 06:43 PM	#4
queensfield First Lieutenant 23 Rep 364 Posts Drives: 2006 330i E90 Join Date: Aug 2011 Location: So Cal iTrader: (0)	I would change the O2 sensors first- they are due to be changed at 120k miles. There are four total- two pre-cat and two post-cat. You can only change the pre-cat ones, since they are most likely at the end of their life. Then, I would clean the mass air flow sensor using the cleaner sold at any local hardware store- be very careful, since it is fragile. If this does not fix your problems, then it is wise to check for vacuum leaks.
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