Hello all.
The CEL light on my 2007 Vibe turned on about a week ago. My car is a base-model FWD with about 80,000 miles on it. I had the computer scanned at O'Reillys. It was a P1071 "Running Lean" Bank 1 code. I cleaned the MAF sensor and checked for vacuum leaks. I reset the CEL light when I cleaned the MAF by disconnecting the battery. 85 miles later, the CEL light came back on. I took it to the local mechanic and he said it needs a new upstream o2 sensor (based on their diagnosis). They wanted $245 for the sensor. I thought that was a bit STEEP! The guy said he called 3 different places as he was surprised at the cost. I went ahead and found a replacement sensor on my own (see link below).
http://shop.advanceautoparts.com/webapp ... fragment-2" onclick="window.open(this.href);return false;
Anyways, my question is, is an Air Fuel Sensor the same thing as an o2 sensor? Also, the mechanic said my Vibe requires a heated o2 sensor, which the Denso product (see link above) is heated. However, when I researched that same part (part # 234-9052) on some other websites, those websites said it is non-heated (see link below). Which web-site is right here? Is the part heated or not?
This link says it is non-heated:
http://www.autopartswarehouse.com/sku/D ... 49052.html" onclick="window.open(this.href);return false;
Also, the part in the second link says it is a 2-wire and the first link says 4-wire. Do I trust Advanced Autopart's website over the second link?
Anyways, I am not super well-versed with fixing cars, so any insight would help. If you all could provide DETAILED explanations to my questions, that would really help. I went ahead and ordered the Denso "heated" Air Fuel Sensor from advanced autoparts, because it was $100 cheaper than what the mechanic quoted. Will this part replace the upstream o2 sensor on my 07 Vibe? I want to make sure I get this right.
In summary, my questions are:
1. Is an Air Fuel Sensor the same thing as an 02 sensor?
2. Is the part heated or non-heated? How do I know? Will the package say when I pick up the part? (Denso's page doesn't have the specs that I could find)
3. Will this part replace the upstream 02 sensor on my 2007 Vibe?
Thanks in advance everyone. It has been a while since I've been on the site, my Vibe has been running well.
02 Sensor replacement. Heated vs. non-heated
Re: 02 Sensor replacement. Heated vs. non-heated
I used this worked good.
http://www.amazon.com/Denso-234-4800-Ox ... B0013TNMY8" onclick="window.open(this.href);return false;
http://www.amazon.com/Denso-234-4800-Ox ... B0013TNMY8" onclick="window.open(this.href);return false;
Re: 02 Sensor replacement. Heated vs. non-heated
To answer your questions:
1. Air/fuel sensor is another name (much less used) for the Oxygen sensor.
2. The forward sensor on modern cars are heated. A heated sensor has 4 wires, compared to 2 for non-heated.
3. The non-heated part will not replace the forward sensor on your Vibe.
After all that, it is unlikely that your problem is the Oxygen sensor. The original intake manifold gaskets are prone to causing vacuum leaks during cold weather. A redesigned gasket is available now. See this thread:
viewtopic.php?f=17&t=40338&p=477082#p477082" onclick="window.open(this.href);return false;
1. Air/fuel sensor is another name (much less used) for the Oxygen sensor.
2. The forward sensor on modern cars are heated. A heated sensor has 4 wires, compared to 2 for non-heated.
3. The non-heated part will not replace the forward sensor on your Vibe.
After all that, it is unlikely that your problem is the Oxygen sensor. The original intake manifold gaskets are prone to causing vacuum leaks during cold weather. A redesigned gasket is available now. See this thread:
viewtopic.php?f=17&t=40338&p=477082#p477082" onclick="window.open(this.href);return false;
Re: 02 Sensor replacement. Heated vs. non-heated
JohnO,
Yeah, I found that Toyota document about the intake manifold gasket. I brought it with me to the shop yesterday and told them about it. I said it was a common issue for this car. I don't know if they checked it or not. I guess I should of asked that. But I provided them with a printed copy of the document you are referring to. Well, I hope this o2 sensor is actually the culprit, so I don't have to throw more money at this fix (especially if it is something as simple as a gasket). I thought it might be the gasket as well because of how cold it was when the CEL light first came on. Do you know if there is a different CEL code for the Bank1 o2 sensor? My car does have 80,000 miles on it, so I thought it was probably about time for a sensor to go.
Thanks.
Yeah, I found that Toyota document about the intake manifold gasket. I brought it with me to the shop yesterday and told them about it. I said it was a common issue for this car. I don't know if they checked it or not. I guess I should of asked that. But I provided them with a printed copy of the document you are referring to. Well, I hope this o2 sensor is actually the culprit, so I don't have to throw more money at this fix (especially if it is something as simple as a gasket). I thought it might be the gasket as well because of how cold it was when the CEL light first came on. Do you know if there is a different CEL code for the Bank1 o2 sensor? My car does have 80,000 miles on it, so I thought it was probably about time for a sensor to go.
Thanks.
Re: 02 Sensor replacement. Heated vs. non-heated
The original intake manifold gaskets tend to go out at 5-6 years, so yours is definitely due. It is fairly easy to do yourself if you can change oil or antifreeze. I'd change that before the Oxygen sensor. The code P0171 is for a lean condition which can be caused by many things. Another is a dirty MAF sensor, so it you haven't cleaned that recently you should go ahead and do that. There are other codes that are more typical of a failing Oxygen sensor.