Question about 2003 Toyota Sienna

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Check engine light on

How to turn off Check engine Lights on 2003 Toyota Sienna

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U can either turn it off with a engine scan tool or disconnect the battery for 5 min's, if u disconnect the battery u may activate your anti-theft systems, so I recommend u have it turned off with a scan tool. A quick note: If the problem in the engine controls that turned the light on is not repaired the light will come back on in 20-30 miles.

Posted on Dec 15, 2008

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I have just had the same problem this morning for the first time and I suspect it is just bad gas. We have had problems with the check engine light in our camaro whenever we bought hi test at the Mobile gas station closest to our home. I would not be surprised if this same gas station is now having water problems with their regular gas which is what we put in our 4runner. Try STP gas treatment first, which is what I am going to do now. When I used this approach with my camaro, the light went out within a few days. Technically, a sensor might have been damaged, but my thinking is that if that sensor is dead, then my fuel/air mixture will get bad enough to notice pretty quick. The TRAC off and VSC off are just extra lights that go on, whenever the check engine light comes on. I'll let you know how it goes.

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