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#1 (permalink) Old 06-02-2009, 12:42 PM
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02 Sensor Bank 1 Sensor 1 Location

Hello all!

I'm trying to fix something myself again, need location and/or pictures would be great!

My code: P0130 - 02 Sensor Circuit (Bank 1 Sensor 1)

Seen a pix somewhere on here that appeared to be in the intake section, but not 100% sure. Somebody out there has changed this one I'm sure!

I want to pull it, get the part # and track down a more affordable one instead of paying $190 from my local dealership...and they say "is it the left one or the right one?" IDK

In case my vehicle info is not listed: 2000 CLK 320 cabrio

Thanks in advance!

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#2 (permalink) Old 06-02-2009, 01:24 PM
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Hi, CG.

Bank 1 is the passenger side (assuming you're in a LHD car) and sensor one is the front one, pop the hood to the second release and look down following the exhaust. Sensor 2 is underneath nearer the transmission.

The sensor you need for that location is a Bosch 15090, Autohausaz has it for $95.51 with free shipping: Your Parts Search Returned 1 Part(s)

Take care and enjoy the ride,
Greg

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#3 (permalink) Old 06-02-2009, 02:04 PM
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This is it, isn't it? I pulled the 2 clips off near the airbox, looked inside the mesh part and seen something that I would call a sensor. So then with the car running and plugged into a diagnostic machine, I pulled that plug there...it started running like it was trying to breathe harder, not to mention a new code didn't pop up!



From some experience I knew that there was an 02 hole in Honda intakes so that was where I looked first.

Thanks gregs210! If this is it, I'm ordering tonight!

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#4 (permalink) Old 06-02-2009, 02:23 PM
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Did you look at the autohaus item? There is a picture of it and you can see the connector. Your Pic is awfully dark, but the arrow looks like it is pointing to the MAF, not the O2 sensor.

FWIW, it's generally a bad idea to unplug anything when your car is running. If you're doing that for testing, shut the car down, remove the key, let the dash display go dark, then unplug. Then start, then shut down etc. before plugging back in.

The O2 sensor is part of the exhaust system, not the intake, that's why I said follow the exhaust back from the manifold. It's down by the block, not up on top.

This is a pic of the sensor, the connector on it is up along the fender/firewall somewhere in a spring clip with the other half of the connection to the harness, probably is black in the original with black insulation. If you find the connection, then you can follow the wire down to the sensor, most of which is inside the exhaust pipe.


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#5 (permalink) Old 06-02-2009, 04:20 PM
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Here's a diagram of your exhaust system showing the location of the O2 sensors. W208 has two O2 sensors, left and right both upstream of the Cat.

[W209 has four O2 sensors, left and right both upstream and downstream of the Cat]
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#6 (permalink) Old 06-03-2009, 02:09 AM
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Just add... looking through the archives here for O2 DIY, it seems that extracting the old sensor can be a bit of a knuckle-breaker!

http://www.benzworld.org/forums/r129...en-sensor.html

http://www.benzworld.org/forums/w202...ensor-how.html

Access is not the same on all models clearly, but I have noted that a special wrench is needed, and some 'rust-breaking' lubricant.
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#7 (permalink) Old 06-03-2009, 06:46 AM
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GREGS210
oops, thought unplugging while running didn't sound like a good idea, had some guy say "oh it's ok, no worries" lol! Geez!

02 sensors I knew had to do something with the exhaust, has to measure the air, but memory of a Honda clouded my mind...not hard to do!

KEYHOLE
You are AWESOME! It is hard to locate a diagram of where these sensors are, I tried for what seems like hours yesterday! There are pic's all over the internet of what the sensor looks like un-installed.

So is it safe to say that the bank 1 sensor 1 is the right side? Sensor 2 being the left side???
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#8 (permalink) Old 06-03-2009, 01:03 PM
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Nope, good guess but you actually have four O2 sensors.

Bank 1 Sensor 1 is the front one on the passenger side, Bank 1 Sensor 2 is the rear one on the passenger side.

Bank 2 also has two sensors, same approximate locations F&R, that's the driver's side.

Take care and enjoy the ride,
Greg

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#9 (permalink) Old 06-03-2009, 03:26 PM
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Greg - whoops - did I post the wrong W208 diagram from the WIS? I had better recheck.
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#10 (permalink) Old 06-03-2009, 05:49 PM
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Quote:
Originally Posted by keyhole View Post
Greg - whoops - did I post the wrong W208 diagram from the WIS? I had better recheck.
I don't think so, since I figured you were trying to show the location for the one the OP is chasing. The EPC and Bosch VPF both list four O2 sensors, though I can't see them on the EPC diagram. Go figure I guess. The attached pic is from the EPC parts listing.

CG, whereabouts are you located? If you're close to DIY members they may be willing to lend a hand.

Take care and enjoy the ride,
Greg
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