How to access the 02 sensors

AltecBX · 02-25-2013, 10:31 AM

These are the codes that I'm getting everytime I start the car: P2CAB, P2C3E, P2CA7
I ordered and received
BMW part#: 11787558087 (emission system, emission components, rr oxygen sensor W/O 4.0L & TWIN POWER TURBO, upper, w/turbo)
BMW part#: 11787558055 (LAMBDA PROBE)

My question is how can I access and change these sensors in the car. I search for DIY for 2007 XI and couldn't find anything. Any help?

themyst · 02-25-2013, 11:03 AM

Rear sensors should be easy to get to. Front sensors especially on an xi require the passenger side motor mount or steering rack to be dropped depending on point of entry.

The sensors connect to engine block so you will need to pull the engine cover off.

AltecBX · 02-25-2013, 11:28 AM

Themyst, the codes I get is for the pre-cat O2 bank 2.
I just put the car on the rhino ramps. I'm going to remove the engine cover and under carriage cover as well.

themyst · 02-25-2013, 12:10 PM

Quote:

Originally Posted by AltecBX

Themyst, the codes I get is for the pre-cat O2 bank 2.
I just put the car on the rhino ramps. I'm going to remove the engine cover and under carriage cover as well.

Thats front o2 sensor for the rear pipe. That ones gonna be a real PITA to get to. You'll probably need to drop the steering rack, have skinny arms and a swivel adapter with a notch so you can clear the cable to get that one out... and a lot of patience.

You could also cut the cable if you don't need to save it

02-25-2013, 10:31 AM	#1
AltecBX Colonel 324 Rep 2,663 Posts Drives: BMW 335xi Sedan; BMW M3 ZCP Join Date: Nov 2007 Location: NYC iTrader: (0) Garage List 2018 BMW M3 ZCP [0.00] 2007 BMW 335Xi [0.00]	How to access the 02 sensors These are the codes that I'm getting everytime I start the car: P2CAB, P2C3E, P2CA7 I ordered and received BMW part#: 11787558087 (emission system, emission components, rr oxygen sensor W/O 4.0L & TWIN POWER TURBO, upper, w/turbo) BMW part#: 11787558055 (LAMBDA PROBE) My question is how can I access and change these sensors in the car. I search for DIY for 2007 XI and couldn't find anything. Any help? __________________ 335xi Sedan 6AT \| Weather(70-85°F) \| N54 Tune Comparison Chart \|\| N54 Turbo Upgrade Comparison Chart -PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Aggressive maps) †Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 \| 0-60 in 4.0sec \|\| †Cobb E30 LT (35% Ethanol/65% 93 Octane) \| 0-60 in 3.9sec AR Design Catless DP \| BMS DCI + OCC \| ETS 5 FMIC \| Alpina B3 Trans Flash \|235/265 19" Michelin PSS
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02-25-2013, 11:03 AM	#2
themyst Major General 177 Rep 6,631 Posts Drives: '16 MK7 GTI Join Date: Feb 2009 Location: NYC iTrader: (8)	Rear sensors should be easy to get to. Front sensors especially on an xi require the passenger side motor mount or steering rack to be dropped depending on point of entry. The sensors connect to engine block so you will need to pull the engine cover off. __________________ E90 LCI N54 6AT
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02-25-2013, 11:28 AM	#3
AltecBX Colonel 324 Rep 2,663 Posts Drives: BMW 335xi Sedan; BMW M3 ZCP Join Date: Nov 2007 Location: NYC iTrader: (0) Garage List 2018 BMW M3 ZCP [0.00] 2007 BMW 335Xi [0.00]	Themyst, the codes I get is for the pre-cat O2 bank 2. I just put the car on the rhino ramps. I'm going to remove the engine cover and under carriage cover as well.
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