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General E46 Forum
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Old 09-11-2013, 05:47 PM   #1
Importjunkie
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Join Date: Jun 2009
Location: Lexington, KY
Posts: 341
My Ride: 00 Prelude
P0313, p0160, p2273

Got SES light today while driving home from work, used my cheapo scan tool to get these codes:

P0313
P0160
P0171
P2273 (P)

After researching I've found:
P2273 BMW Oxygen (O2) Sensor Signalstuck Rich (Bank 2 Sensor 2)
P0160 BMW HO2S22 Sensor Circuit No Activity Detected

Just had my driveshaft, guibo, csb, and diff bushings done at a shop yesterday, but not sure how this relates to these codes?

165k miles, 2001 325i

I have done:
Oil Separator @ 120k
NGK Plugs @ 115k
Replaced all intake boots, cleaned MAF, cleaned ICV
DISA O-ring
Intake cam sensor @ 158k

I have not done boots, coils, or o2 sensors.
Car runs and drives fine with an occasional slight hesitation on takeoff.
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Old 09-11-2013, 05:52 PM   #2
BobbyC
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make sure they didn't take the harness off of the o2 sensor or somehow snagged a line. Make sure they plugged them in all the way. At last, make sure the harness does not touch the exhaust.
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Old 09-11-2013, 06:09 PM   #3
Importjunkie
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Quote:
Originally Posted by BobbyC View Post
make sure they didn't take the harness off of the o2 sensor or somehow snagged a line. Make sure they plugged them in all the way. At last, make sure the harness does not touch the exhaust.
Would I have to remove anything to do this? Not familiar with o2 sensors.
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Old 09-11-2013, 10:22 PM   #4
Importjunkie
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Bump!
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Old 09-12-2013, 12:32 PM   #5
BobbyC
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Just crawl under it and take a look see. I have seen heavy handed mechanic's wrenches fly off and get all tangled up in wires. Jack it up or put it on ramps and looks to see if they are all connected and plugged in right.
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Old 09-12-2013, 12:46 PM   #6
Importjunkie
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P0313, p0160, p2273

Quote:
Originally Posted by BobbyC View Post
Just crawl under it and take a look see. I have seen heavy handed mechanic's wrenches fly off and get all tangled up in wires. Jack it up or put it on ramps and looks to see if they are all connected and plugged in right.
The car is up on jack stands now, I'll check it out when I get home!


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Old 09-14-2013, 04:01 PM   #7
Importjunkie
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Got under the car, couldn't find anything.. can someone remind me where the wiring connectors for the post cat o2 sensors are?
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Old 10-19-2013, 02:30 PM   #8
Importjunkie
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Bump. Still have these codes but now also P0455. Now my engine makes an intermittent rapid knocking noise, and my idle dips horribly, but only sometimes... Also slight loss of low end power when this happens. It is intermittent though, only happens for like a minute while driving then goes back to normal. Tried unplugging maf and not much difference.


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Old 10-19-2013, 02:47 PM   #9
Importjunkie
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P0313, p0160, p2273

Update: the knocking noise seems to happen immediately after driving the car, sitting at idle. It lasts about a minute then goes away.


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Old 10-19-2013, 05:39 PM   #10
Importjunkie
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P0313, p0160, p2273

The knocking noise happens every time I drive but the idle dipping does not. Could this possibly be ignition coil related?


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Old 09-13-2014, 09:00 AM   #11
CPTPowell66
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Importjunkie,

Did the garage have heat up your exhaust manifolds to remove exhaust studs and replace them this is possible and your car has enough miles to warrant the difficult to get studs off? I have 2001 330i that I just rebuilt the tranny in and replaced all the same parts your did-I did not replace the o2 sensors since 70.00 each and I have 191,000 miles on it. Let me know and we will figure this out-strange we are getting same code so something is obvious and we can narrow it down.
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