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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 01-18-2013, 02:56 PM
kpex76 kpex76 is offline
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Location: IL
 
Join Date: Oct 2010
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Mein Auto: 02 530i sport
Angry post cat O2 sensor

Hello everyone. I've been trying to replace the two post cat O2 sensors.
I know where they are located but where is the connector for the two sensors?

Does anyone have a DIY for the two post cat O2 sensors?
BTW, mine is a 2001 530i.

Thanks a bunch!


Kevin
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  #2  
Old 01-18-2013, 03:11 PM
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doru doru is offline
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Why do you change them? Did you get a post cat inneficiency code?

The post cat sensors should connect on the left side of the engine (driver's side) - opposite of the pre-cat sensors (mirrored, but on the other side of the engine).

You will need to have the car jacked up safely on stands, then once the old ones are out, you will need to fish the electrical cable & connector with a string or a wire. You might want to observe the original routing.
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Old 01-18-2013, 05:00 PM
kpex76 kpex76 is offline
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Mein Auto: 02 530i sport
Thanks for that info Doru.
I will try that next weekend.
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  #4  
Old 01-22-2013, 08:28 AM
tdbtexas tdbtexas is offline
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Location: Houston, Texas
 
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Mein Auto: BMW 530i 2004
help help please
BMW 530I 2004 error code P0057 HO2S heater control circuit low --> O2 sensor bank 2 sensor 2
Please help, what is part number or pre or post Cat sensor ?
thanks
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  #5  
Old 01-22-2013, 09:05 AM
edjack edjack is offline
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You need to post this on the E60 forum.
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Old 01-22-2013, 09:17 AM
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Fudman Fudman is offline
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Quote:
Originally Posted by kpex76 View Post
Hello everyone. I've been trying to replace the two post cat O2 sensors.
I know where they are located but where is the connector for the two sensors?

Does anyone have a DIY for the two post cat O2 sensors?
BTW, mine is a 2001 530i.
As Doru said, Why? The post cat O2 sensors are rarely replaced. Most folks just ignore them as their function is sort of useless. Put the money elsewhere.
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