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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Cel: need help to identify the source



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      11-01-2013, 04:44 PM   #1
Saintor
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Cel: need help to identify the source

2C2E = Bank 2 sensor 1 (precat), but what is it? I have seen a DIY but text only. I tried to clean the MAF. It returned.



My Bentley calls for BMW special tools (11 7 030 and 11 9 150). Can I get away without them? Do I need to access from under the car to can it be done all from the engine bay?

If it is a #2 or 11787558073, it will be the second time because it was changed under warranty 2010-09-06 according to my papers.

What sensor is it from these? 17099? I'd prefer NGK.

Quote:
NTK Part # 25612 NTK OE Type
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. B1S2; Downstream Cyls. 1-3 (Only 3 Remaining)
Part Image
CAD$70.85

NTK Part # 25613 NTK OE Type
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. B2S2; Downstream Cyls. 4-6
Part Image
CAD$81.31

BOSCH Part # 16808 OE Type - Exact Fit; Heated; Wires: 4; Length (in): 15.7
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. Downstream; For cylinders 1-3 (Only 4 Remaining)
Part Image
CAD$82.35

BOSCH Part # 17098 Wideband A/F Sensor - OE Type - Exact Fit; Wideband A/F; Wires: 5; Length (in): 53.9
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. Upstream; For cylinders 1-3
Part Image
CAD$98.24

BOSCH Part # 16809 OE Type - Exact Fit; Heated; Wires: 4; Length (in): 13.8
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. Downstream; For cylinders 4-6 (Only 1 Remaining)
Part Image
CAD$99.07

BOSCH Part # 17099 Wideband A/F Sensor - OE Type - Exact Fit; Wideband A/F; Wires: 5; Length (in): 34.6
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. Upstream; For cylinders 4-6 (Only 3 Remaining)
Part Image
CAD$103.26

NTK Part # 24333 OE Type Wideband
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. B2S1; Upstream Cyls. 4-6 (Only 1 Remaining)
Part Image
CAD$129.59

NTK Part # 24322 OE Type Wideband
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. B1S1; Upstream Cyls. 1-3 (Only 2 Remaining)
Part Image
CAD$136.70

DENSO Part # 2345138 OE Style
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. Upstream; Cylinder 4,5,6
Part Image
CAD$148.20

DENSO Part # 2344892 OE Style
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. Downstream; Cylinder 4,5,6
Part Image
CAD$157.61

DENSO Part # 2344877 OE Style
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. Downstream; Cylinder 1,2,3
Part Image
CAD$158.65

DENSO Part # 2345139 OE Style
Flag indicates this part fits vehicles sold in the Canadian Market. It does not indicate where the part was made -- manufacturers produce parts in multiple factories worldwide. Upstream; Cylinder 1,2,3
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      11-01-2013, 08:56 PM   #2
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Its a failed oxygen sensor before the primary catalytic converters. It would be part number 2 on your diagram. No special tools are needed. I personally stick to Bosch o2 sensors.
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      11-01-2013, 09:43 PM   #3
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This confirms what I heard elsewhere.... but the other source mentioned that I would have to drop the exhaust... *ouch* ... founded or not?
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      11-02-2013, 09:36 AM   #4
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No you wont have to drop the exhaust. It can be replaced from under the hood.
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      11-04-2013, 06:29 PM   #5
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I had a quick look. The sensor itself is easy to reach.... but the connector (under the #20 outlet sign ) above looks like it is *behind* the engine. How difficult is it to reach the connector?
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      11-04-2013, 08:22 PM   #6
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It's not behind the engine. It's under the engines plastic cover on the top.
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      11-17-2013, 08:07 AM   #7
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Quote:
The sensor itself is easy to reach.
I withdraw this. It didn't go well.

I removed the engine covers and put them back twice. And that O2 sensor is still there.

I bought a O2 socket 7/8".... which is useless here. The sensor (in green) is covered with a bracket, which I wanted to remove. Then I went to the store again to buy a 1/4" 3" extension.... and realized that the bolt head (in red) is square and not hexagonal. So a 'special tool' is really needed. Damn I hate working on that car... always complicated.

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