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Old 02-23-2010, 07:03 PM   #1 (permalink)
 
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I have a 2007 SX4, I just hit 37,000 miles and my little engine light came on yesterday. I went to Auto Zone and they said the code was P2A01. He said I need to replace my O2 sensor. Is the correct, or could I have just put some bad gas in my car?
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Old 02-23-2010, 09:47 PM   #2 (permalink)
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Originally Posted by smsid67 View Post
I have a 2007 SX4, I just hit 37,000 miles and my little engine light came on yesterday. I went to Auto Zone and they said the code was P2A01. He said I need to replace my O2 sensor. Is the correct, or could I have just put some bad gas in my car?
have you recently had an oil change?
if so, its likely that oil leaked onto the sensor when the filter was changed.
suzuki put out a tsb to cover the that o2 sensor when performing oil changes

the oil apparently gets into the vent and damaged the sensor.
try clearing the code and see if it comes back right away..
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Old 02-24-2010, 06:20 PM   #3 (permalink)
 
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Thanks for the information, yes, I did just get my oil changed. I had it done when I purchased new tires. (which was not at a dealership) I will have my husband check it tonight, I was going to have him check for a loose sensor wire, I will add this too.
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Old 02-24-2010, 08:56 PM   #4 (permalink)
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Thanks for the information, yes, I did just get my oil changed. I had it done when I purchased new tires. (which was not at a dealership) I will have my husband check it tonight, I was going to have him check for a loose sensor wire, I will add this too.
If it happens right after the oil change this is the cause most likely. The sensor isn't damaged - normally once the code is cleared it won't come back until next oil change.
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Old 02-24-2010, 11:01 PM   #5 (permalink)
 
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Well, I had my oil changed on Wednesday, left for a trip on Thursday. I drove over 700 miles. After I arrived home it came on the next day. My husband looked at the wires and they looked fine. He found some oil residue on the sensor by the filter. He wiped it clean, and then disconnected the battery. When he reconnected the battery, the light was still on. Do I have to take it to a store to have them reset the sensor or take the negative cable off (if the cable how long?)

If it is the o2 sensor, where can we get information on which one it is?
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Old 02-25-2010, 05:35 PM   #6 (permalink)
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Open your hood and look down into the engine cavity.
See the aluminum heat shield on the front of the engine?
The O2 sensor is down on the right side of that heat shield, screwed into the exhaust pipe. It looks just like a spark plug with wires coming out of it.

Both the oil filler cap and filter are on the opposite side of the engine. Only the worse mechanic in the world, would ever slop oil on that sensor.
I can't even imagine how that would ever happen.
Even I'm not that big of a Klutz.

I've had my oil changed twice so far, , both times at the Suzuki dealer and have had NO problem with my Check Engine light, or any light coming on.

O2 sensors are good for about 60,000 miles. After that they begin to drift out of calibration, due to contaminants in the gasoline. They will cause the engine to run richer and richer as they continue to age.
Contaminated gas can cause premature failure of an O2 sensor.

A black sooty deposit in your tail pipe will tell you the engine is running rich.
I always change my O2 sensors by 60k just for safety, and for the best efficiency of the engine. Today, gasoline is too expensive to be just blowing it out your tail pipe.

Cheers Mates!
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Old 02-25-2010, 06:33 PM   #7 (permalink)
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Both the oil filler cap and filter are on the opposite side of the engine. Only the worse mechanic in the world, would ever slop oil on that sensor.
I can't even imagine how that would ever happen.
Even I'm not that big of a Klutz.

The Shadow
2007 was the only year the had the o2 sensor directly under the oil filter.
in 2008 they moved it further back for that reason..

as mentioned before, try cleaning it and disconnect battery for at least a minute and cross your fingers..
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Old 02-25-2010, 07:36 PM   #8 (permalink)
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Whew, LL, I'm sure glad you shed some light on that subject.
I wonder how many other improvements have been made since 2007?

The O2 sensor is now in a very good place, to stay clean and to be easy to change. Congrat's, Suzuki!

I was in a tool store just a few days ago and saw they had a O2 sensor socket wrench for sale. I think I'm going to get one, just for the hellofit.

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Old 02-25-2010, 07:54 PM   #9 (permalink)
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yeah the sensor is in a good spot now, but if you have an AWD they put the connector right between the engine and transfer case. real tight spot to reach!
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Old 02-25-2010, 08:05 PM   #10 (permalink)
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On my 2009 SX4 AWD, Crossover......the connector for the O2 sensor is just under the right side of the air box, sticking out there like a red nose on a wino.
But, it's not RED, It's GREEN! Very easy to get hands on.
That's the upper one. So far, I've never seen the lower one.

Do you know if the two sensors are the same, even though they are called by different names, according to their use.

Cheers mates!
The Shadow

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