Replacing a faulty O2 sensor is not a difficult project, even for a novice DIY'er, as long as you take the appropriate precautions to prevent accidentally burning yourself. Show
This article applies to the Toyota Camry (1997-2011). Your vehicle's oxygen sensor measures the oxygen content in the exhaust, and adjusts engine parameters like the air-to-fuel ratio (AFR) to keep it running at its best. However, exhaust gasses are (by nature) hot and dirty, so the sensor can wear out with time. Speaking very generally, a lifespan of 100,000 miles can be expected from the sensors. Therefore, as your vehicle ages, it is increasingly common that an O2 sensor will go bad on your vehicle. A P0125 or P1335 code means that you have a bad O2 sensor. Since a faulty sensor can affect your fuel efficiency by between 15 percent and 25 percent, you should replace your sensor when it fails.  Materials Needed
Step 1 – Prepare to replace your O2 sensorLet your car cool for a couple of hours before replacing your O2 sensor. The area of your engine where you'll be working heats up quickly, and stays hot long after you've turned off your engine. The longer you give your engine to cool before replacing your O2 sensor, the less likely you are to accidentally burn yourself. Step 2 – Open hood and locate sensorOpen the hood and use the hood support rod to fix in place. Identify the catalytic converter, and then look for the two sensors (they look like thick black wires) that are connected to it. There is one (sensor 1) in front of the catalytic converter and a second (sensor 2) located behind and beneath the catalytic converter. Be sure to replace the correct sensor (i.e., the sensor that has failed). To make sure you do, consider testing each sensor with a multimeter by connecting each in turn to the multimeter (set to 200 ohms) to see if the sensor is "live." Featured Video: How to Check O2 SensorStep 3 – Disconnect O2 sensor from connectorFollow the "wire" from the O2 sensor to the connector. At the connector, stick one or two finger(s) behind the connector and push on tab, while simultaneously pulling up on the connector. It should easily pop out of place. Step 4 – Remove O2 sensorUse O2 sensor socket to remove O2 sensor. To do so, slide "wire" into slot on O2 socket and then push socket down until it covers the O2 sensor. Once it does, attach ratchet to O2 sensor, which you'll use to loosen and then ultimately remove the sensor. If your engine is warm, or to help ensure you don't accidentally burn yourself, wear a welder's glove on one hand and then use that hand to actually remove the O2 sensor once you've gotten it nearly off with the O2 socket and ratchet. Step 5 – Add anti-seize on threads of new O2 sensorRub a little anti-seize (likely included with your new O2 sensor) on the threads of the new O2 sensor. This will help you more easily remove the new O2 sensor if you need to so at some point in the future. Step 6 – Replace O2 sensorReplacement is reverse of removal:
Featured Video: How to Remove/Replace O2 SensorRelated Discussions
Just repaired an 07 LE with the P0137 code The car had 135K miles and the sensor was really sooted and nasty looking. This code is caused by a low voltage from the sensor. This could be caused by resistance being off, fouling of the sensor, low fuel pressure, or other lean condition. The code is for Bank 1 Sensor 2. It is the sensor located on the exhaust pipe under the car (near the oil pan) and not the exhaust manifold catalytic converter mounted Bank 1 Sensor 1 or California only Bank 1 Sensor 3 which is located after the underfloor (second) catalytic converter. I would only run a Denso or NTK (NGK) O2 sensor on a Toyota. This is based on experience. Denso is also the original part of most of these cars (though I think NTK also supplies to Toyota). Do not buy a sensor from the dealer unless you contact our forum vendor Roman at Toyota of Cool Springs. The markup is outrageous considering the Denso part is EXACTLY the same. I would go to Amazon or Rockauto and buy the correct sensor. Part numbers: 2002 and 2003 Federal Emissions 2AZFE OEM Toyota: 89465-06050 2003-2006 California Emissions 2AZFE OEM Toyota: 89465-33321 2004-2006 Federal Emissions 2AZFE OEM Toyota: 89465-06120 - USA Built or 89465-33410 - Japan Built 2007-2009 Federal Emissions 2AZFE OEM Toyota: 89465-06200 2007-2009 California Emissions 2AZFE OEM Toyota: 89465-06150 So how do you tell if your Camry or Solara has Federal or California Emissions? It's all in the exhaust manifold. Federal emissions models have an exhaust manifold with the sensor mounted on the manifolds downward pipe section and facing horizontally. For this reason, Federal emissions models will have an exhaust manifold heat shield. Federal Emissions engine:
California Emissions models will have an exhaust manifold with the sensor mount directly on top and facing vertically. For this reason, California emission models will not have an exhaust manifold heat shield. California Emissions engine:
Hope this clears up some things for anyone who has this issue. How much is an O2 sensor for a 2009 Toyota Camry?We currently carry 12 Oxygen Sensor products to choose from for your 2009 Toyota Camry, and our inventory prices range from as little as $72.99 up to $215.50. On top of low prices, Advance Auto Parts offers 3 different trusted brands of Oxygen Sensor products for the 2009 Toyota Camry.
Is O2 sensor bank 1 sensor 1 upstream or downstream?Bank 1 Sensor 1 means Upstream Right/Rear;Bank 2 Sensor 1 means Upstream Left/Front;Bank 1 Sensor 2 means Downstream Right/Rear;Bank 2 Sensor 2 means Downstream Left/Front.
How do I know which O2 sensor is bank 1?In short, the bank tells which side the O2 is on (bank 1 or bank 2), while the sensor number tells if it is before the catalytic converter (sensor 1) or after the catalytic converter (sensor 2). Remember that bank 1 is determined by the side where cylinder number 1 is located.
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2009 Toyota Camry Oxygen Sensor location
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