Question about 2003 Toyota Camry

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Ck engine light

I was told that my gas emision sensor is probably not working. How do I change it

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The On-Board Diagnostic (OBD) computer on the 2003 Camry is a second generation (or OBD-2) and is far more advanced that its predecessor. You could purchase an OBD-2 code reader for anywhere between $69 and $159, but considering that you may never have need for it again, I would sugggest just going to Advance Auto, Auto Zone, Pep Boys, O'Reily or other store, and have them run a free diagnostic (they want to sell you the replacement parts). The printout will tell you exactly what is wrong.

Posted on Feb 27, 2009

  • Fahr Quad Mar 13, 2009

    I was just wondering what the diagnostic read at the parts store. From the other persons comment, it sounds like the sensor that they were talking about was the oxygen sensor which is located on the exhaust. When the exhaust is cold, spray the sensor threads with WD-40 and let sit for a while, then go to loosen the old sensor, have the wrench slip, bust your knuckles, cuss loudly, go wash off the cut, apply a bandage and drive to the muffler shop to let them do it, then stop by your Doctor's office for a tetanus shot before you get lockjaw.

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