Sensor for Low Pressure Replacement - Increased Emissions Problem

[flip]

I've not seen any pics or write up's on this anywhere so I figured I'd post up what I have learned and my pictures to help the next person who has this problem out...

First of all, I have another thread where we discussed the codes my car was throwing and possible problems/fixes. You can see that at this link if you'd like to read the detailed back story...
http://www.m3post.com/forums/showthread.php?t=683661

Problem: I got a check engine light and my I-Drive reported 'Increased Emissions'.

Codes:
279D - Power management, closed-circuit current violation
2722 - Fuel-pressure sensor, signal
27D0 - Fuel pressure control adaptation
27BB - Fuel system, lambda/charge plausibility, bank 2
27C1 - Info: Tank empty on fault entry

After clearing the codes and having the fault come back, this was the only code that came back...
P0175 x2 - System too rich (Bank 2)

My Solution: Replacing the Sensor for Low Pressure

Part: Part #20 in the link below...
http://realoem.com/bmw/showparts.do?...96&hg=16&fg=15

Cost: $80-$140 Depending on where you get your part...

Procedure:
1) Open the gas tank to relieve pressure so that gas does not spill out too excessively.
2) Remove the air box (I'll try to find a link to this procedure somewhere, or will remove mine again and take more pictures of that part)
3) Unplug old sensor
4) Remove old sensor
5) Install new sensor. Be very careful not to over tighten. The portion that you wrench on is very large and will allow you to apply a great deal of pressure to the small threads. There is a ruber gasket on the new part so you don't want to shread that either. I'm unsure of the torque specs on this so maybe we can look it up...
6) Plug in new sensor
7) Re install air box and filter
8) Clear your codes
9) Crank car and carefully check for leaks

Here's the pics that I have. I circle the sensor in the picture from far away. It is on the drivers side just in front of the shock tower.




Thanks a TON to Elm3 for all the help with this. It was a new one for both of us but a fun experience...

Enjoy a cold beverage.

[elm3]

It was fun doing this. I'm glad that we stopped taking the covers at the bottom of the car off. I'm glad that I just happened to look in the engine bay and saw it. Or it would have bit us in the arse. I like learning new stuff in this car. It was cool having you guys hang out at the house for a little while.

Eric

[flip]

Originally Posted by elm3

It was fun doing this. I'm glad that we stopped taking the covers at the bottom of the car off. I'm glad that I just happened to look in the engine bay and saw it. Or it would have bit us in the arse. I like learning new stuff in this car. It was cool having you guys hang out at the house for a little while.

Eric

Yeah, at least we learned what's under there... Glad you looked too! lol.

[Sean05]

Thanks Bro this fixed my issue.

[Longbow64]

I had code 2722-Fuel Pressure Sensor elec diagnosis. The SES wouldn't go away despite clearing the codes with the Vishnu Procede. I went to BMW El Paso and bought a Low Pressure Fuel Sensor, Part #13537614317, $77. The directions above are great, but despite opening the gas cap there was a great deal of fuel spraying. I quickly unscrewed the old one and screwed in the new one. I cleared the codes and reset the ECU through the Procede Command Center. The SES is gone and everything appears good to go. I have 60,000 miles on my M3. This seems like a problem on post warranty vehicles. Thanks for the OP.

[GrussGott]

Originally Posted by flip

I have another thread where we discussed the codes my car was throwing and possible problems/fixes. You can see that at this link if you'd like to read the detailed back story...
http://www.m3post.com/forums/showthread.php?t=683661

Problem: I got a check engine light and my I-Drive reported 'Increased Emissions'.

I've got a 2011 with 11,800 miles and sounds like I have the same issue.

I've been getting rough idle very occasionally for weeks. Then the car died after start-up one morning and I got all of the lights; shut 'er down, restarted and everything was gone. Then I started getting no power on light throttle when going under 10 mph unless I really pushed down.

Now this morning it almost died and then did a big over-rev and the SES and increased emissions lights came on. I shut 'er down, waited, and restarted with no change.

I set up an appointment with a local dealer but it's 2 weeks out. Question is, is this too long to wait with this problem? Should I be asking for earlier appointment (will do that anyway) and/or try a new dealer? Or do y'all think I'll be good until my appointment?

Thanks!!!

[Longbow64]

That's strange. If you can get it to the BMW dealership with those lights on, they will have to take it in. If there are no lights, just drive cautiously for the next two weeks and be thankful for the warranty.

[mark896]

Originally Posted by Longbow64

I had code 2722-Fuel Pressure Sensor elec diagnosis. The SES wouldn't go away despite clearing the codes with the Vishnu Procede. I went to BMW El Paso and bought a Low Pressure Fuel Sensor, Part #13537614317, $77. The directions above are great, but despite opening the gas cap there was a great deal of fuel spraying. I quickly unscrewed the old one and screwed in the new one. I cleared the codes and reset the ECU through the Procede Command Center. The SES is gone and everything appears good to go. I have 60,000 miles on my M3. This seems like a problem on post warranty vehicles. Thanks for the OP.

60,000? How's it holding up? Any complaints?

[Longbow64]

The car's doing fine. I bought the car with 30k on it. Since then, I've had to replace a steering sensor (under warranty) and just recently a fuel sensor (self purchase and install <$100), and a rear left wheel bearing which should've cost just $320 parts/service, but ended up costing $2500. Only cost me my $150 Carmax extended warranty deductible (all of this is covered in a thread in the suspension forum). I also just paid for my first service on the car which ran me close to $500 for spark plugs and an oil change.

I had some misfires and a couple rough starts a couple months ago (also discussed in another thread) which I found out were caused by a loose grounding cable on my Vishnu piggyback. I tightened that up and there haven't been any further issues. I uninstalled my Procede and meth recently, not because of any issues or problems, but because I just wanted to switch to a flash based tune to vary it up a bit.

My driver seat is a little worn on the left side, but I plan on getting parts of the seat swapped out with alcanterra/suede/speed cloth. That will work well on the autocross too.