2004 bmw x3

I'm getting code P0174 - any idea what this code is?

I think that one means you are running lean...most likely has to do with a crack in the intake boot behind the MAF sensor, but could be something else with the intake. Odbii codes are universal and don't pinpoint specific failures. Also if it is the intake, after replacement you will have to clear the code...it won't go away automatically.

Any other symptoms, noises or other codes?

Agree with x3brian, probably the intake boot. Well known issue on the X3...had same code last year on our 04 X3, replaced intake boot...fixed.

Took it to my bmw guy - it read the same code along with bad gas cap. My guy told me to replace gas cap and see how things go...

Originally Posted by x3brian

I think that one means you are running lean...most likely has to do with a crack in the intake boot behind the MAF sensor, but could be something else with the intake. Odbii codes are universal and don't pinpoint specific failures. Also if it is the intake, after replacement you will have to clear the code...it won't go away automatically.

Any other symptoms, noises or other codes?

What kind of noises should i be looking for?

Originally Posted by utfootball4

What kind of noises should i be looking for?

Nothing in particular just curious if drivability has changed since MIL got activated.

Originally Posted by utfootball4

Took it to my bmw guy - it read the same code along with bad gas cap. My guy told me to replace gas cap and see how things go...

Interesting. That code has more to do with intake than gas cap. I know my 09 has a separate dash light when the BMW gas cap code gets thrown. Keep us updated if problem comes back.

I had that code and my intake book was cracked at the bellow part and my crank vent system was bad.

My '06 also has a separate light for the gas cap.

Intake boot, Disa Valve, oil seperator and hoses... Could be a number of things

New gas cap and reset check engine light - all is well so far.

Originally Posted by Kevingovro

Intake boot, Disa Valve, oil seperator and hoses... Could be a number of things

Let's hope the problem is solved....

Originally Posted by utfootball4

I'm getting code P0174 - any idea what this code is?

With mine it was MAF sensor. Cleared the code but it came back weeks later. I removed and cleaned the air filter and cleaned the MAF sensor with cleaner I got from Auto Zone.

http://www.linquist.net/motorsports/bmw/maf

Yeah the code will most likely come back in 60-100 miles

Originally Posted by Kevingovro

Yeah the code will most likely come back in 60-100 miles

Been over 200miles - drive over 40miles to work each day....

Originally Posted by chrisk03

Agree with x3brian, probably the intake boot. Well known issue on the X3...had same code last year on our 04 X3, replaced intake boot...fixed.

How much did the repairs cost?

You could probably change the intake boot yourself, but if not it should take <1hr of labor.

Originally Posted by Kevingovro

Yeah the code will most likely come back in 60-100 miles

If it is the intake boot how long could I go before getting it fixed - 7-10days?

Originally Posted by jdauria

You could probably change the intake boot yourself, but if not it should take <1hr of labor.

I am not handy - ill probably make it worst....

Originally Posted by utfootball4

If it is the intake boot how long could I go before getting it fixed - 7-10days?

If its just a tear in the rubber intake boot you should have time. Your engine may run lean and waste some gas, but its not dangerous IMO.

Originally Posted by mlukas161

If its just a tear in the rubber intake boot you should have time. Your engine may run lean and waste some gas, but its not dangerous IMO.

Second this, I drove around in my e46 for a couple weeks before fixing my lower intake boot. But you have to be sure thats the problem You can literally stick your hand/fingers and feel if there is a hole.

intake boot is fairly easy to fix, you might bang up your knuckles trying to get that stupid plastic splash guard in and out. Biggest PITA is taking off the cabin filter housing

Originally Posted by utfootball4

I am not handy - ill probably make it worst....

If the code hasn't come back in more than 200 miles, I wouldn't worry about it. The intake boot probably is fine and it just needed a new gas cap. The gasket around it develop cracks and dries out letting pressure escape from the tank.

+1. Don't worry about it unless the code comes back. This is minor in the grand scheme and really only impact mpg/idle.

Originally Posted by X3-terrestrial

If the code hasn't come back in more than 200 miles, I wouldn't worry about it. The intake boot probably is fine and it just needed a new gas cap. The gasket around it develop cracks and dries out letting pressure escape from the tank.

I spoke too soon - the light came back on last thur morning..... I notice when driving throughout my neighborhood when I step on the gas to accelerate I can hear a whistling noise for brief second...


**** It's a 2006 not 2004....

how many miles do you have on the x3? How is she running, sluggish? how is your MPG?