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Intermittent check engine light and check vsc system on 2011 Sienna; code p0012

I always close gas cap properly. I have heard "air pressure" sound coming from gas tank when filling the tank. Warnings come on typically when have driven for awhile. Sometimes it goes off when I fill the gas tank. Took it to Toyota dealer. They said it was code p0012. Changed oil etc and said maybe it was just low oil or dirty oil. Seemed all fixed. But came back two days later. Driving long distance 3-4 times a week (four hours each time). REALLY afraid of getting in black hole of repeat repairs that do not stop the problem! Minivan has nearly 130,000 miles. I'm not noticing any performance issues.
Vehicle: Toyota Sienna 2011, 6 cyl
asked Apr 18, 2016 by Joan Johnson

1 Answer

P0012 Camshaft position "A" timing over advanced or system performance (Bank 1)

You have to replace the camshaft position solenoid actuator, that the only fix, if left to long it can burn out the its ECM driver

Camshaft solenoid

answered Apr 20, 2016 by Reynaldo (10,835 points)

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