changing an oxygen sensor? - Chevy Colorado & GMC Canyon
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post #1 of 11 (permalink) Old 11-09-2011, 02:28 PM Thread Starter
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changing an oxygen sensor?

I got the codes P0030 and P0135. I believe that is the sensor further down the exhaust and not right at the manifold? I've heard they are hard to change cause they are usually corroded and that fun stuff. What about the wire, does that come off at the sensor or further up??

I would like to know if I should attempt this myself of take it to a garage, thanks!

2006 Colorado Ext Cab 4X4 Z85 auto 31's I4 2.8
2003 Toyota Echo (wife's)
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post #2 of 11 (permalink) Old 11-09-2011, 09:48 PM
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They can be corroded, if you plan on doing it yourself, it's a good bet to spray it with PB Blaster or a similar penetrating fluid for a day or two prior to trying to get it out.

The wire doesn't disconnect at the sensor, there's probably one to two feet of wire there before you get to the connector, but it should be pretty easy to find, just follow the wire.

With some penetrating fluid (GM actually sells some pretty good stuff at their dealers, too) and the right sized wrench, there's no reason you shouldn't be able to do it yourself.


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post #3 of 11 (permalink) Old 11-09-2011, 10:20 PM
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pick up an o2 sensor socket it helps rather than rounding it off with a 7/8 wrench. If you have a princess auto they are dirt cheap.

both codes are for bank 1 sensor 1 so the one located in the manifold. if replacing the o2 doesnt cure the problem then there might be a problem with the o2 heater circuit. make sure you have no fuese blown

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Last edited by zeuce; 11-09-2011 at 10:25 PM.
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post #4 of 11 (permalink) Old 11-10-2011, 09:34 PM
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sensor 2 after cat, napa price is 45-50$ for it, just changed mine took 5 mins, might have to crank on her hard but do it nice and steady and she will turn loose, i had code p0135 and it was sensor 2 bank 1 i believe so its the one downstream. also wire just unclips easy
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post #5 of 11 (permalink) Old 11-13-2011, 02:29 PM Thread Starter
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Awesome thanks guys. I will give this a try myself. So the one right on manifold right? I'm going in town tomorrow, get myself a o2 sensor socket. Hope someone in town has them. All I got is crappy tire, carquest, shur-fit, the dealership.

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post #6 of 11 (permalink) Old 11-14-2011, 12:56 AM
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to quote alldata:

DTC P0135 HO2S Heater Performance Bank 1 Sensor 1

aka manifold cat o2

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post #7 of 11 (permalink) Old 11-18-2011, 08:17 AM Thread Starter
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Quote:
Originally Posted by zeuce View Post
to quote alldata:

DTC P0135 HO2S Heater Performance Bank 1 Sensor 1

aka manifold cat o2
I'm going to buy the sensor at the dealer and take it to the shop when I get my power steering looked at. I'm afraid he is gonna go get a bosch one and I have heard nothing but horror stories about them.

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post #8 of 11 (permalink) Old 11-18-2011, 09:11 AM
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Quote:
Originally Posted by BennettCKM View Post
Awesome thanks guys. I will give this a try myself. So the one right on manifold right? I'm going in town tomorrow, get myself a o2 sensor socket. Hope someone in town has them. All I got is crappy tire, carquest, shur-fit, the dealership.
Make sure when you replace the sensor that you coat the threads with HIGH TEMPERATURE anti-seize. At full engine loads that sensor can get over 1500 degrees F. So get anti-seize rated higher than that. Most oxy sensors come with a small packet inside the box.

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post #9 of 11 (permalink) Old 11-18-2011, 12:16 PM
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yeah it should come with that anti-seize def put that on it should be a bronze color in a little package with the o2 sensor
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post #10 of 11 (permalink) Old 11-18-2011, 01:08 PM
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Quote:
Originally Posted by BennettCKM View Post
I'm going to buy the sensor at the dealer and take it to the shop when I get my power steering looked at. I'm afraid he is gonna go get a bosch one and I have heard nothing but horror stories about them.
You do realize that the AC Delco part may very well actually be made by Bosch, right?
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