Noob question: O2 sensor plug removal
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1st Gear
Joined: Oct 2013
Posts: 7
Noob question: O2 sensor plug removal
Hi Folks,
Trying to replace both B1 S1&S2 sensors on a C5 4.2L and managed to get the first sensor out (drivers side) but can't seam to get the plug out. Is the a specific technique to pulling these out? Don't want to use any brute force. See attached picture.
Also, another question while I have our attention
The fault codes state there are issues on O2 sensors B1 S1 and B1 S2. I don't have a manual and I ordered them from Amazon and both came with a plug that had 3 wires together and one separate. Do these sound like the right plugs? I was reading another post and one had a plug with 4 wires together and one separate.
Trying to replace both B1 S1&S2 sensors on a C5 4.2L and managed to get the first sensor out (drivers side) but can't seam to get the plug out. Is the a specific technique to pulling these out? Don't want to use any brute force. See attached picture.
Also, another question while I have our attention
The fault codes state there are issues on O2 sensors B1 S1 and B1 S2. I don't have a manual and I ordered them from Amazon and both came with a plug that had 3 wires together and one separate. Do these sound like the right plugs? I was reading another post and one had a plug with 4 wires together and one separate.
Last edited by ather; Oct 11, 2013 at 08:46 PM.
2nd Gear
Joined: Mar 2012
Posts: 550
From: Hellertown, Pennsylvania
Pull the black plastic piece away from the firewall. There is a "U" that it clips into. After that, you can use your finger or a small flat head to depress the pin that is locking both ends together. You'll have a better idea of what I'm talking about after you pull it out of the "U".
If I recall correctly, I believe the O2 sensors should have four wires.
If I recall correctly, I believe the O2 sensors should have four wires.
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