Car Problem Reports

Toyota Sienna Oxygen Sensor May Fail

Toyota Sienna Problem
39 Reports
Me Too

Model Years Affected: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008

Average Mileage: 88,571 mi (13,000 mi - 177,000 mi)


One or more oxygen sensors may fail resulting in illumination of the Check Engine Light.

  • Visitor, , 65,000 mi

    Check engine light came on at about 25000 miles. Toyota dealership found thatboth O2 sensors were bad . I had them replace them at about $600. At 50,000 miles the O2 sensors went bad again. This time I did not bother replacing them as the gas mileage not noticeably affected. But, I need to stare at the check engine light every day.

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  • Visitor, , 13,000 mi

    Very upset. Oxygen and fuel sensors bad on Toyota Sienna that only has 13,000 miles on it and has been impeccably maintained. Not a Toyota fan if I am going to have to pay for this.

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  •  Rookie

    Not sure about mileage.

    Had to have 2 sensors replaced within a couple of years. Mechanic suggested clicking gas cap at least 7 times when tightening. Have had no problems since...fingers crossed.

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  • Visitor, , 130,000 mi

    Initial problem was indicated by "Check Engine" light. Follow-up with a OBD-II code reader (a $40 must-have item for a DIY repairman) pin-pointed a faulty Air/Fuel sensor on rear exhaust manifold. Replaced with a new sensor (about $160) from local parts store. Access to the sensor is cramped and limited, but certainly do-able. Cleared codes, replaced sensor, drove for 100 miles, passed state emissions inspection, no issues after 2 months.

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  • Visitor, , 123,023 mi

    the problem is the oxygen P0135 say the computer

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  • Visitor, , 70,000 mi

    O2 sensor replaced.

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  • Visitor, , 85,000 mi

    oxigen sensors may fail resulting in ilumination of check engine light

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  • Visitor, , 85,000 mi

    not fixed yet, check engine light due to oxygen sensors problem. 226$ for the parts, not sure it worth it.

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  • Visitor, , 135,000 mi


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  • Visitor, , 99,000 mi

    toyota highlander also has bad oxygen sensors took it to toyota they replaced front and back 02 sensors at 1,200. now they tell me another sensor is bad because my heat stopped working and that will cost me 800,00 more dollars.to toyota is not worth having.

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