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2010 Chevy Aveo LT O2 Sensor connector
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DBalzi
New User
Dec 6, 2013, 12:30 PM
Post #1 of 8
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2010 Chevy Aveo LT O2 Sensor connector
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My check engine light came on and found out it was the O2 sensor 2. I looked under the exhaust and saw that the male plug coming from the sensor had 3 of the wires pulled out. Now I need help figuring out where each wire goes in to the plug, it only has 9700 miles on it so I would rather rewire it than buy a new sensor for $200+. The wire colors are black, purple, gray, and white. Black was the only one still connected on the bottom right, assuming the connector locks is the bottom. Thank you for your help, been searching online but I'm not sure which guide to follow.
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 6, 2013, 12:45 PM
Post #2 of 8
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Re: 2010 Chevy Aveo LT O2 Sensor connector
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You don't want to do that. That is a waterproof connection that is too important to rig up. Replace the sensor.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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DBalzi
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Dec 6, 2013, 1:10 PM
Post #3 of 8
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Re: 2010 Chevy Aveo LT O2 Sensor connector
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I pulled the plug apart and can reuse it to keep it waterproof without any damage, I'm not going to just slap some electrical tape on exposed wires. Like I said I just don't know the order they were in before pulled out. It is the factory O2 sensor.
Here's a picture of what I'm working with
The bottom right is definitely black, don't know where purple, white, and grey go. Thanks again for any help
(This post was edited by DBalzi on Dec 6, 2013, 2:38 PM)
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Discretesignals
Ultimate Carjunky
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Dec 6, 2013, 1:43 PM
Post #4 of 8
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Re: 2010 Chevy Aveo LT O2 Sensor connector
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Wonder why the terminals are hanging out of the connector? That usually doesn't happen. Are the terminal locks broken off in the connector?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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DBalzi
New User
Dec 6, 2013, 2:13 PM
Post #5 of 8
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Re: 2010 Chevy Aveo LT O2 Sensor connector
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I bought it as a salvage car yesterday, it was in a wreck by the
previous owner. It looks like the plastic shroud sheared the other
three wires off in the wreck.
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Discretesignals
Ultimate Carjunky
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Dec 6, 2013, 5:23 PM
Post #6 of 8
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Re: 2010 Chevy Aveo LT O2 Sensor connector
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There is no wiring diagram showing the wire colors on the O2 sensor harness itself. We could guess and tell you the colors based off a chart of different sensor wire colors, but don't know if they are correct. You could find out what the heater wires are on the sensor, by using an ohm meter. It doesn't matter which polarity you connect the heater wires. The signal and ground wires have to be connected correctly though. You'll have to check at the connector to find out which brown is which using a volt meter. One brown should have a bias voltage sitting on it with the ignition on.
On the engine harness side:
pink/black = heater power
brown = heater ground
brown= signal
purple= signal ground
An ohm meter should have a reading of 3-23 ohms across the heater wires on the sensor side.
Your best bet is to find another sensor as HT stated. The sensor gets it reference air though the wiring, so trying to piece it together will probably result in problems later.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Dec 6, 2013, 7:33 PM)
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Hammer Time
Ultimate Carjunky
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Dec 6, 2013, 5:33 PM
Post #7 of 8
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Re: 2010 Chevy Aveo LT O2 Sensor connector
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I don't know how you're expecting to splice those wires but there is no acceptable way of doing it.
I'm seeing them range in price between $115 and $140 aftermarket.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Dec 6, 2013, 5:35 PM)
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nickwarner
Veteran
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Dec 9, 2013, 6:45 AM
Post #8 of 8
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Re: 2010 Chevy Aveo LT O2 Sensor connector
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I'd replace the sensor. Salveage cars are not cheap to repair, thats why they are salvage. If it got yanked hard enough to pull the terminals out of the socket the locks in the socket will be broken. If you try to rig this it will keep the engine light on for a code to that sensor. The only way to get a good result on this is the new sensor. Its a risk you take buying a wreck.
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